./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:02:11,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:02:11,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:02:11,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:02:11,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:02:11,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:02:11,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:02:11,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:02:11,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:02:11,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:02:11,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:02:11,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:02:11,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:02:11,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:02:11,523 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:02:11,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:02:11,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:02:11,524 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:02:11,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:02:11,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:02:11,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:02:11,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:02:11,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:02:11,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:02:11,528 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:02:11,528 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:02:11,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:02:11,528 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:02:11,529 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:02:11,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:02:11,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:02:11,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:02:11,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:02:11,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:02:11,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:02:11,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:02:11,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:02:11,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:02:11,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:02:11,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:02:11,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:02:11,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:02:11,532 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a [2024-11-16 08:02:11,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:02:11,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:02:11,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:02:11,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:02:11,739 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:02:11,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2024-11-16 08:02:13,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:02:13,144 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:02:13,145 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2024-11-16 08:02:13,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2047dad5/fd1276de03224054809ce7b13e56c6b1/FLAG73dd0acae [2024-11-16 08:02:13,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2047dad5/fd1276de03224054809ce7b13e56c6b1 [2024-11-16 08:02:13,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:02:13,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:02:13,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:02:13,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:02:13,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:02:13,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dba9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13, skipping insertion in model container [2024-11-16 08:02:13,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,596 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:02:13,721 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c[1124,1137] [2024-11-16 08:02:13,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:02:13,754 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:02:13,763 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c[1124,1137] [2024-11-16 08:02:13,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:02:13,803 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:02:13,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13 WrapperNode [2024-11-16 08:02:13,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:02:13,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:02:13,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:02:13,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:02:13,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,845 INFO L138 Inliner]: procedures = 16, calls = 99, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 106 [2024-11-16 08:02:13,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:02:13,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:02:13,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:02:13,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:02:13,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,876 INFO L175 MemorySlicer]: Split 66 memory accesses to 6 slices as follows [2, 21, 15, 11, 5, 12]. 32 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 2, 2, 2, 1, 2]. [2024-11-16 08:02:13,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,887 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:02:13,896 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:02:13,897 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:02:13,897 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:02:13,897 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (1/1) ... [2024-11-16 08:02:13,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:02:13,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:13,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 08:02:13,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 08:02:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:02:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:02:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 08:02:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 08:02:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 08:02:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_41_0 [2024-11-16 08:02:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_41_0 [2024-11-16 08:02:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:02:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:02:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 08:02:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 08:02:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 08:02:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 08:02:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-16 08:02:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-16 08:02:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 08:02:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 08:02:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 08:02:14,032 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:02:14,034 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:02:14,188 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L82: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#n~0#1.base, main_~#n~0#1.offset);havoc main_~#n~0#1.base, main_~#n~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#z~0#1.base, main_~#z~0#1.offset);havoc main_~#z~0#1.base, main_~#z~0#1.offset; [2024-11-16 08:02:14,224 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-16 08:02:14,225 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:02:14,236 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:02:14,236 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:02:14,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:02:14 BoogieIcfgContainer [2024-11-16 08:02:14,236 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:02:14,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:02:14,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:02:14,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:02:14,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:02:13" (1/3) ... [2024-11-16 08:02:14,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a20cb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:02:14, skipping insertion in model container [2024-11-16 08:02:14,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:02:13" (2/3) ... [2024-11-16 08:02:14,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a20cb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:02:14, skipping insertion in model container [2024-11-16 08:02:14,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:02:14" (3/3) ... [2024-11-16 08:02:14,244 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohencu-ll.c [2024-11-16 08:02:14,257 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:02:14,257 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:02:14,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:02:14,304 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@32d5512d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:02:14,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:02:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 08:02:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 08:02:14,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:14,312 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:14,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:14,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:14,315 INFO L85 PathProgramCache]: Analyzing trace with hash -994028207, now seen corresponding path program 1 times [2024-11-16 08:02:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:14,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304992481] [2024-11-16 08:02:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:14,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:02:14,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:14,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304992481] [2024-11-16 08:02:14,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304992481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:02:14,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:02:14,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 08:02:14,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617086754] [2024-11-16 08:02:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:02:14,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:14,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:02:14,942 INFO L87 Difference]: Start difference. First operand has 42 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:02:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:15,169 INFO L93 Difference]: Finished difference Result 101 states and 151 transitions. [2024-11-16 08:02:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:02:15,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-16 08:02:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:15,176 INFO L225 Difference]: With dead ends: 101 [2024-11-16 08:02:15,176 INFO L226 Difference]: Without dead ends: 58 [2024-11-16 08:02:15,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:02:15,180 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:15,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 229 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:02:15,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-16 08:02:15,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-11-16 08:02:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.088235294117647) internal successors, (37), 36 states have internal predecessors, (37), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-16 08:02:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2024-11-16 08:02:15,216 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 10 [2024-11-16 08:02:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:15,218 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2024-11-16 08:02:15,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:02:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2024-11-16 08:02:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 08:02:15,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:15,219 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:15,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:02:15,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:15,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:15,220 INFO L85 PathProgramCache]: Analyzing trace with hash 865402565, now seen corresponding path program 1 times [2024-11-16 08:02:15,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:15,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485824167] [2024-11-16 08:02:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:15,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:15,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126354824] [2024-11-16 08:02:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:15,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:15,244 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) [2024-11-16 08:02:15,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:02:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:15,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-16 08:02:15,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:15,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:15,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:02:15,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:15,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485824167] [2024-11-16 08:02:15,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126354824] [2024-11-16 08:02:15,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126354824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:15,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:15,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-16 08:02:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81594082] [2024-11-16 08:02:15,729 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:15,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 08:02:15,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:15,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 08:02:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:02:15,732 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 08:02:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:16,188 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2024-11-16 08:02:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 08:02:16,188 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-16 08:02:16,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:16,189 INFO L225 Difference]: With dead ends: 83 [2024-11-16 08:02:16,189 INFO L226 Difference]: Without dead ends: 80 [2024-11-16 08:02:16,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-11-16 08:02:16,191 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:16,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 206 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:02:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-16 08:02:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2024-11-16 08:02:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 48 states have internal predecessors, (50), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-16 08:02:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2024-11-16 08:02:16,214 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 16 [2024-11-16 08:02:16,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:16,215 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2024-11-16 08:02:16,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 08:02:16,215 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2024-11-16 08:02:16,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 08:02:16,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:16,217 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:16,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 08:02:16,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:16,418 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:16,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:16,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1148753289, now seen corresponding path program 1 times [2024-11-16 08:02:16,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:16,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033976992] [2024-11-16 08:02:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:16,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:16,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182867640] [2024-11-16 08:02:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:16,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:16,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:16,449 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) [2024-11-16 08:02:16,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:02:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:16,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 08:02:16,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:16,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:16,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 08:02:16,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 08:02:16,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:16,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033976992] [2024-11-16 08:02:16,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182867640] [2024-11-16 08:02:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182867640] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2024-11-16 08:02:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662512727] [2024-11-16 08:02:16,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:02:16,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:16,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:02:16,750 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 08:02:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:16,882 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2024-11-16 08:02:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:02:16,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-16 08:02:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:16,884 INFO L225 Difference]: With dead ends: 84 [2024-11-16 08:02:16,884 INFO L226 Difference]: Without dead ends: 81 [2024-11-16 08:02:16,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-16 08:02:16,886 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 18 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:16,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 232 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:02:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-16 08:02:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-16 08:02:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 51 states have internal predecessors, (53), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-16 08:02:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2024-11-16 08:02:16,915 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 22 [2024-11-16 08:02:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:16,916 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2024-11-16 08:02:16,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 08:02:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2024-11-16 08:02:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 08:02:16,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:16,918 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:16,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 08:02:17,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-16 08:02:17,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:17,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1686081049, now seen corresponding path program 1 times [2024-11-16 08:02:17,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:17,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205312705] [2024-11-16 08:02:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:17,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:17,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314447059] [2024-11-16 08:02:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:17,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:17,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:17,145 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) [2024-11-16 08:02:17,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:02:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:17,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 08:02:17,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:17,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:17,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:17,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 08:02:17,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 08:02:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:17,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205312705] [2024-11-16 08:02:17,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:17,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314447059] [2024-11-16 08:02:17,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314447059] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:17,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:17,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-11-16 08:02:17,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518750967] [2024-11-16 08:02:17,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:02:17,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:17,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:17,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-16 08:02:17,659 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 08:02:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:18,283 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2024-11-16 08:02:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:02:18,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-16 08:02:18,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:18,284 INFO L225 Difference]: With dead ends: 88 [2024-11-16 08:02:18,284 INFO L226 Difference]: Without dead ends: 85 [2024-11-16 08:02:18,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:02:18,285 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:18,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 181 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 08:02:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-16 08:02:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-16 08:02:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-16 08:02:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2024-11-16 08:02:18,306 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 28 [2024-11-16 08:02:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:18,306 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2024-11-16 08:02:18,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 08:02:18,307 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2024-11-16 08:02:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 08:02:18,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:18,307 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:18,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 08:02:18,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:18,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:18,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash -541077867, now seen corresponding path program 1 times [2024-11-16 08:02:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831247172] [2024-11-16 08:02:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066777633] [2024-11-16 08:02:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:18,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:18,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:18,536 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) [2024-11-16 08:02:18,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 08:02:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:18,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 08:02:18,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:18,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:18,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 08:02:18,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 08:02:18,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:18,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831247172] [2024-11-16 08:02:18,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:18,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066777633] [2024-11-16 08:02:18,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066777633] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:18,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:18,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-11-16 08:02:18,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170322396] [2024-11-16 08:02:18,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:02:18,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-16 08:02:18,941 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 08:02:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:19,299 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2024-11-16 08:02:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:02:19,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2024-11-16 08:02:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:19,302 INFO L225 Difference]: With dead ends: 100 [2024-11-16 08:02:19,302 INFO L226 Difference]: Without dead ends: 97 [2024-11-16 08:02:19,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 9 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:02:19,303 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:19,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 161 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:02:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-16 08:02:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-11-16 08:02:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 61 states have internal predecessors, (63), 24 states have call successors, (24), 10 states have call predecessors, (24), 11 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-16 08:02:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2024-11-16 08:02:19,318 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 34 [2024-11-16 08:02:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:19,318 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2024-11-16 08:02:19,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 08:02:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2024-11-16 08:02:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 08:02:19,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:19,319 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-11-16 08:02:19,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 08:02:19,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:19,519 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:19,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash -666261821, now seen corresponding path program 1 times [2024-11-16 08:02:19,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:19,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921928498] [2024-11-16 08:02:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:19,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:20,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 08:02:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:20,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:02:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:20,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 08:02:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:20,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 08:02:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:20,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 08:02:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 08:02:20,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:20,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921928498] [2024-11-16 08:02:20,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921928498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:20,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638282505] [2024-11-16 08:02:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:20,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:20,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:20,038 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) [2024-11-16 08:02:20,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 08:02:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:20,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-16 08:02:20,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:20,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:20,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:20,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:20,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 08:02:20,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 08:02:20,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638282505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:02:20,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:02:20,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 17 [2024-11-16 08:02:20,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140814946] [2024-11-16 08:02:20,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:20,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 08:02:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 08:02:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-16 08:02:20,520 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 17 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-16 08:02:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:20,993 INFO L93 Difference]: Finished difference Result 125 states and 147 transitions. [2024-11-16 08:02:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 08:02:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 44 [2024-11-16 08:02:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:20,995 INFO L225 Difference]: With dead ends: 125 [2024-11-16 08:02:20,995 INFO L226 Difference]: Without dead ends: 122 [2024-11-16 08:02:20,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 81 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2024-11-16 08:02:20,996 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 85 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:20,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 260 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:02:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-16 08:02:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-16 08:02:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 76 states have internal predecessors, (78), 30 states have call successors, (30), 12 states have call predecessors, (30), 15 states have return successors, (34), 30 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-16 08:02:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2024-11-16 08:02:21,020 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 44 [2024-11-16 08:02:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:21,020 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2024-11-16 08:02:21,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-16 08:02:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2024-11-16 08:02:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 08:02:21,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:21,021 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-11-16 08:02:21,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 08:02:21,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:21,226 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:21,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:21,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1664774676, now seen corresponding path program 1 times [2024-11-16 08:02:21,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:21,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8332091] [2024-11-16 08:02:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:21,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:21,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 08:02:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:21,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 08:02:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:21,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 08:02:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:21,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:02:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:21,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 08:02:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:21,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:02:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 08:02:21,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:21,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8332091] [2024-11-16 08:02:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8332091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:02:21,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:02:21,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 08:02:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644117392] [2024-11-16 08:02:21,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:02:21,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:21,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:21,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:02:21,467 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 08:02:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:21,624 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2024-11-16 08:02:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 08:02:21,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2024-11-16 08:02:21,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:21,626 INFO L225 Difference]: With dead ends: 126 [2024-11-16 08:02:21,626 INFO L226 Difference]: Without dead ends: 123 [2024-11-16 08:02:21,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-16 08:02:21,627 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:21,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 100 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:02:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-16 08:02:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-16 08:02:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 79 states have internal predecessors, (81), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (34), 30 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-16 08:02:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2024-11-16 08:02:21,646 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 44 [2024-11-16 08:02:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:21,647 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2024-11-16 08:02:21,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 08:02:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2024-11-16 08:02:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 08:02:21,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:21,648 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 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] [2024-11-16 08:02:21,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:02:21,648 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:21,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash 597947063, now seen corresponding path program 2 times [2024-11-16 08:02:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:21,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916664743] [2024-11-16 08:02:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:21,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118717033] [2024-11-16 08:02:21,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 08:02:21,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:21,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:21,669 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) [2024-11-16 08:02:21,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 08:02:21,780 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 08:02:21,781 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 08:02:21,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-16 08:02:21,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:21,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:21,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:21,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:22,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:22,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:22,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-16 08:02:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 08:02:22,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 08:02:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916664743] [2024-11-16 08:02:22,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118717033] [2024-11-16 08:02:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118717033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:02:22,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 08:02:22,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-11-16 08:02:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118623470] [2024-11-16 08:02:22,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:22,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 08:02:22,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:22,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 08:02:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-11-16 08:02:22,514 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 22 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 8 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-16 08:02:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:23,491 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2024-11-16 08:02:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 08:02:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 8 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 50 [2024-11-16 08:02:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:23,492 INFO L225 Difference]: With dead ends: 164 [2024-11-16 08:02:23,492 INFO L226 Difference]: Without dead ends: 161 [2024-11-16 08:02:23,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 08:02:23,493 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 132 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:23,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 425 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 08:02:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-16 08:02:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2024-11-16 08:02:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 100 states have internal predecessors, (103), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-16 08:02:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 178 transitions. [2024-11-16 08:02:23,514 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 178 transitions. Word has length 50 [2024-11-16 08:02:23,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:23,514 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 178 transitions. [2024-11-16 08:02:23,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 8 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-16 08:02:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 178 transitions. [2024-11-16 08:02:23,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 08:02:23,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:23,516 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:23,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 08:02:23,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:23,719 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:23,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash 873860101, now seen corresponding path program 1 times [2024-11-16 08:02:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:23,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123053680] [2024-11-16 08:02:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:23,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237135874] [2024-11-16 08:02:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:23,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:23,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:23,740 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) [2024-11-16 08:02:23,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 08:02:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:23,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 08:02:23,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:23,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 08:02:23,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:23,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:23,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123053680] [2024-11-16 08:02:23,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:23,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237135874] [2024-11-16 08:02:23,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237135874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:23,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:23,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-16 08:02:23,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879131598] [2024-11-16 08:02:23,986 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:23,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:23,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:23,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:23,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:02:23,987 INFO L87 Difference]: Start difference. First operand 155 states and 178 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:02:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:24,206 INFO L93 Difference]: Finished difference Result 165 states and 186 transitions. [2024-11-16 08:02:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:02:24,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2024-11-16 08:02:24,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:24,207 INFO L225 Difference]: With dead ends: 165 [2024-11-16 08:02:24,207 INFO L226 Difference]: Without dead ends: 162 [2024-11-16 08:02:24,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-16 08:02:24,208 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 37 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:24,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 122 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 181 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:02:24,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-16 08:02:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2024-11-16 08:02:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 100 states have (on average 1.06) internal successors, (106), 103 states have internal predecessors, (106), 36 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-16 08:02:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2024-11-16 08:02:24,231 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 50 [2024-11-16 08:02:24,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:24,231 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2024-11-16 08:02:24,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:02:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2024-11-16 08:02:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 08:02:24,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:24,232 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 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] [2024-11-16 08:02:24,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 08:02:24,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:24,437 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:24,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:24,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1962418409, now seen corresponding path program 3 times [2024-11-16 08:02:24,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:24,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558807678] [2024-11-16 08:02:24,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:24,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:24,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979979495] [2024-11-16 08:02:24,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 08:02:24,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:24,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:24,458 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) [2024-11-16 08:02:24,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 08:02:24,546 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 08:02:24,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 08:02:24,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-16 08:02:24,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:24,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:24,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:24,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:24,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:24,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 08:02:24,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 08:02:25,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:25,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558807678] [2024-11-16 08:02:25,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:25,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979979495] [2024-11-16 08:02:25,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979979495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:02:25,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 08:02:25,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2024-11-16 08:02:25,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638494241] [2024-11-16 08:02:25,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:25,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 08:02:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 08:02:25,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-16 08:02:25,141 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand has 18 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-16 08:02:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:25,771 INFO L93 Difference]: Finished difference Result 172 states and 191 transitions. [2024-11-16 08:02:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 08:02:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 56 [2024-11-16 08:02:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:25,772 INFO L225 Difference]: With dead ends: 172 [2024-11-16 08:02:25,772 INFO L226 Difference]: Without dead ends: 169 [2024-11-16 08:02:25,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 14 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2024-11-16 08:02:25,773 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 95 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:25,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 371 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 08:02:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-16 08:02:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2024-11-16 08:02:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 103 states have (on average 1.058252427184466) internal successors, (109), 106 states have internal predecessors, (109), 36 states have call successors, (36), 20 states have call predecessors, (36), 23 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-16 08:02:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 184 transitions. [2024-11-16 08:02:25,794 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 184 transitions. Word has length 56 [2024-11-16 08:02:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:25,794 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 184 transitions. [2024-11-16 08:02:25,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-16 08:02:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 184 transitions. [2024-11-16 08:02:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 08:02:25,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:25,795 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:25,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 08:02:25,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 08:02:25,996 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:25,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash 498695324, now seen corresponding path program 1 times [2024-11-16 08:02:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:25,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399389287] [2024-11-16 08:02:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:25,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:26,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129515453] [2024-11-16 08:02:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:26,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:26,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:26,013 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) [2024-11-16 08:02:26,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 08:02:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:26,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 08:02:26,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:26,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:26,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 08:02:26,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:26,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:27,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 08:02:27,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 72 [2024-11-16 08:02:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 14 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 08:02:27,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:27,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:27,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399389287] [2024-11-16 08:02:27,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:27,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129515453] [2024-11-16 08:02:27,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129515453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:27,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:27,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-16 08:02:27,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615440192] [2024-11-16 08:02:27,779 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:27,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 08:02:27,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 08:02:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-16 08:02:27,779 INFO L87 Difference]: Start difference. First operand 163 states and 184 transitions. Second operand has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 08:02:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:28,434 INFO L93 Difference]: Finished difference Result 173 states and 192 transitions. [2024-11-16 08:02:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 08:02:28,435 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2024-11-16 08:02:28,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:28,437 INFO L225 Difference]: With dead ends: 173 [2024-11-16 08:02:28,437 INFO L226 Difference]: Without dead ends: 170 [2024-11-16 08:02:28,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2024-11-16 08:02:28,438 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:28,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 63 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 393 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 08:02:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-16 08:02:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2024-11-16 08:02:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 106 states have (on average 1.0566037735849056) internal successors, (112), 109 states have internal predecessors, (112), 36 states have call successors, (36), 21 states have call predecessors, (36), 24 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-16 08:02:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2024-11-16 08:02:28,468 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 56 [2024-11-16 08:02:28,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:28,468 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2024-11-16 08:02:28,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 08:02:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2024-11-16 08:02:28,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 08:02:28,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:28,469 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 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] [2024-11-16 08:02:28,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 08:02:28,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:28,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:28,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:28,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1114174759, now seen corresponding path program 4 times [2024-11-16 08:02:28,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:28,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258127553] [2024-11-16 08:02:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:28,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900252725] [2024-11-16 08:02:28,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 08:02:28,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:28,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:28,696 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) [2024-11-16 08:02:28,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 08:02:28,811 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 08:02:28,812 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 08:02:28,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-16 08:02:28,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:28,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:28,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:28,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:28,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:29,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:29,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:29,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:29,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 08:02:29,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-16 08:02:30,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:30,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258127553] [2024-11-16 08:02:30,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:30,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900252725] [2024-11-16 08:02:30,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900252725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:02:30,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 08:02:30,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 26 [2024-11-16 08:02:30,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014525558] [2024-11-16 08:02:30,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:30,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 08:02:30,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:30,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 08:02:30,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-11-16 08:02:30,548 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand has 26 states, 20 states have (on average 2.4) internal successors, (48), 21 states have internal predecessors, (48), 12 states have call successors, (22), 8 states have call predecessors, (22), 5 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-16 08:02:33,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:33,145 INFO L93 Difference]: Finished difference Result 185 states and 205 transitions. [2024-11-16 08:02:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 08:02:33,146 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 2.4) internal successors, (48), 21 states have internal predecessors, (48), 12 states have call successors, (22), 8 states have call predecessors, (22), 5 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) Word has length 62 [2024-11-16 08:02:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:33,147 INFO L225 Difference]: With dead ends: 185 [2024-11-16 08:02:33,147 INFO L226 Difference]: Without dead ends: 182 [2024-11-16 08:02:33,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 85 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=316, Invalid=1754, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 08:02:33,148 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 144 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:33,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 258 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 08:02:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-16 08:02:33,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 175. [2024-11-16 08:02:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 112 states have (on average 1.0535714285714286) internal successors, (118), 115 states have internal predecessors, (118), 36 states have call successors, (36), 23 states have call predecessors, (36), 26 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-16 08:02:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 193 transitions. [2024-11-16 08:02:33,190 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 193 transitions. Word has length 62 [2024-11-16 08:02:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:33,190 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 193 transitions. [2024-11-16 08:02:33,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 2.4) internal successors, (48), 21 states have internal predecessors, (48), 12 states have call successors, (22), 8 states have call predecessors, (22), 5 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-16 08:02:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 193 transitions. [2024-11-16 08:02:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 08:02:33,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:33,191 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:33,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 08:02:33,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 08:02:33,392 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:33,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2122086095, now seen corresponding path program 1 times [2024-11-16 08:02:33,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:33,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787689911] [2024-11-16 08:02:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:33,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751416227] [2024-11-16 08:02:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:33,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:33,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:33,416 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) [2024-11-16 08:02:33,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 08:02:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:33,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 08:02:33,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:33,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:33,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:33,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 70 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 08:02:33,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:34,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:34,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787689911] [2024-11-16 08:02:34,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:34,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751416227] [2024-11-16 08:02:34,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751416227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:34,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:34,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-16 08:02:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698973974] [2024-11-16 08:02:34,649 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:34,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:34,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:02:34,650 INFO L87 Difference]: Start difference. First operand 175 states and 193 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 08:02:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:34,949 INFO L93 Difference]: Finished difference Result 185 states and 201 transitions. [2024-11-16 08:02:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:02:34,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 62 [2024-11-16 08:02:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:34,950 INFO L225 Difference]: With dead ends: 185 [2024-11-16 08:02:34,950 INFO L226 Difference]: Without dead ends: 182 [2024-11-16 08:02:34,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:02:34,951 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:34,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 87 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 216 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:02:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-16 08:02:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2024-11-16 08:02:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.0521739130434782) internal successors, (121), 118 states have internal predecessors, (121), 36 states have call successors, (36), 24 states have call predecessors, (36), 27 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-16 08:02:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 196 transitions. [2024-11-16 08:02:34,988 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 196 transitions. Word has length 62 [2024-11-16 08:02:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:34,988 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 196 transitions. [2024-11-16 08:02:34,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 08:02:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 196 transitions. [2024-11-16 08:02:34,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:02:34,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:34,989 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:35,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 08:02:35,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 08:02:35,189 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:35,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1925006524, now seen corresponding path program 1 times [2024-11-16 08:02:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759165615] [2024-11-16 08:02:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58445090] [2024-11-16 08:02:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:35,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:35,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:35,218 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) [2024-11-16 08:02:35,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 08:02:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:35,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 08:02:35,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:35,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:35,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 08:02:35,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:35,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:35,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759165615] [2024-11-16 08:02:35,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:35,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58445090] [2024-11-16 08:02:35,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58445090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:35,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:35,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-16 08:02:35,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292275360] [2024-11-16 08:02:35,634 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:35,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:35,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:02:35,635 INFO L87 Difference]: Start difference. First operand 179 states and 196 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 08:02:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:35,857 INFO L93 Difference]: Finished difference Result 189 states and 204 transitions. [2024-11-16 08:02:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:02:35,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2024-11-16 08:02:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:35,858 INFO L225 Difference]: With dead ends: 189 [2024-11-16 08:02:35,858 INFO L226 Difference]: Without dead ends: 184 [2024-11-16 08:02:35,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 87 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:02:35,859 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:35,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 93 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 209 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:02:35,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-16 08:02:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2024-11-16 08:02:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 119 states have internal predecessors, (122), 36 states have call successors, (36), 25 states have call predecessors, (36), 27 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-16 08:02:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-11-16 08:02:35,896 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 68 [2024-11-16 08:02:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:35,897 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-11-16 08:02:35,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 08:02:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-11-16 08:02:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 08:02:35,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:35,897 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:02:35,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 08:02:36,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 08:02:36,098 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:36,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash 85490773, now seen corresponding path program 1 times [2024-11-16 08:02:36,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:36,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319654844] [2024-11-16 08:02:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:36,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:36,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891042735] [2024-11-16 08:02:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:36,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:36,125 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) [2024-11-16 08:02:36,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 08:02:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:36,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 08:02:36,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:36,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:36,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:36,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-16 08:02:36,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:36,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:36,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319654844] [2024-11-16 08:02:36,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:02:36,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891042735] [2024-11-16 08:02:36,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891042735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:36,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:02:36,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-16 08:02:36,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897600568] [2024-11-16 08:02:36,756 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:36,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:02:36,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:36,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:02:36,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:02:36,757 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-16 08:02:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:37,049 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2024-11-16 08:02:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:02:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2024-11-16 08:02:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:37,051 INFO L225 Difference]: With dead ends: 184 [2024-11-16 08:02:37,051 INFO L226 Difference]: Without dead ends: 145 [2024-11-16 08:02:37,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 96 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:02:37,051 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:37,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 87 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 205 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:02:37,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-16 08:02:37,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-16 08:02:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 93 states have (on average 1.043010752688172) internal successors, (97), 95 states have internal predecessors, (97), 30 states have call successors, (30), 19 states have call predecessors, (30), 21 states have return successors, (33), 30 states have call predecessors, (33), 28 states have call successors, (33) [2024-11-16 08:02:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2024-11-16 08:02:37,080 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 74 [2024-11-16 08:02:37,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:37,081 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2024-11-16 08:02:37,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-16 08:02:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2024-11-16 08:02:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 08:02:37,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:37,081 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 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] [2024-11-16 08:02:37,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 08:02:37,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 08:02:37,282 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:37,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1239389627, now seen corresponding path program 1 times [2024-11-16 08:02:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897099874] [2024-11-16 08:02:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:37,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 08:02:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 08:02:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 08:02:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:02:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 08:02:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:02:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 08:02:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 08:02:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 08:02:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:02:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 08:02:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 08:02:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-16 08:02:38,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:02:38,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897099874] [2024-11-16 08:02:38,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897099874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:38,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132335197] [2024-11-16 08:02:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:38,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:38,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:38,288 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) [2024-11-16 08:02:38,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 08:02:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:38,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-16 08:02:38,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:38,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:38,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:38,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:38,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:02:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-16 08:02:38,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:02:38,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 08:02:38,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132335197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:02:38,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 08:02:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 18 [2024-11-16 08:02:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237583696] [2024-11-16 08:02:38,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 08:02:38,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 08:02:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:02:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 08:02:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-16 08:02:38,881 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand has 18 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-16 08:02:39,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:02:39,305 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2024-11-16 08:02:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 08:02:39,305 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 80 [2024-11-16 08:02:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:02:39,306 INFO L225 Difference]: With dead ends: 152 [2024-11-16 08:02:39,306 INFO L226 Difference]: Without dead ends: 149 [2024-11-16 08:02:39,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-16 08:02:39,307 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:02:39,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:02:39,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-16 08:02:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-16 08:02:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 98 states have internal predecessors, (100), 30 states have call successors, (30), 20 states have call predecessors, (30), 22 states have return successors, (33), 30 states have call predecessors, (33), 28 states have call successors, (33) [2024-11-16 08:02:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2024-11-16 08:02:39,339 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 80 [2024-11-16 08:02:39,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:02:39,339 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2024-11-16 08:02:39,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-16 08:02:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2024-11-16 08:02:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 08:02:39,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:02:39,340 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 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] [2024-11-16 08:02:39,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 08:02:39,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:39,545 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:02:39,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:02:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash 930659476, now seen corresponding path program 1 times [2024-11-16 08:02:39,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:02:39,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949071521] [2024-11-16 08:02:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:02:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:02:39,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040081104] [2024-11-16 08:02:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:02:39,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:02:39,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:02:39,567 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) [2024-11-16 08:02:39,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 08:02:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:02:39,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-16 08:02:39,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:02:39,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:39,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:39,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 08:02:39,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:02:40,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-16 08:02:40,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-16 08:02:53,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-16 08:03:01,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:01,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 16 proven. 189 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 08:03:01,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:03:02,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2024-11-16 08:03:02,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-16 08:03:03,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-16 08:03:21,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:03:21,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949071521] [2024-11-16 08:03:21,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:03:21,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040081104] [2024-11-16 08:03:21,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040081104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:03:21,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:03:21,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2024-11-16 08:03:21,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104518770] [2024-11-16 08:03:21,680 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 08:03:21,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 08:03:21,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:03:21,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 08:03:21,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=880, Unknown=5, NotChecked=0, Total=992 [2024-11-16 08:03:21,681 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand has 25 states, 20 states have (on average 1.9) internal successors, (38), 22 states have internal predecessors, (38), 8 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 4 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-16 08:03:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:03:23,984 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2024-11-16 08:03:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 08:03:23,985 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.9) internal successors, (38), 22 states have internal predecessors, (38), 8 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 4 states have call predecessors, (13), 7 states have call successors, (13) Word has length 86 [2024-11-16 08:03:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:03:23,985 INFO L225 Difference]: With dead ends: 159 [2024-11-16 08:03:23,986 INFO L226 Difference]: Without dead ends: 156 [2024-11-16 08:03:23,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 60 SyntacticMatches, 17 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=311, Invalid=2234, Unknown=5, NotChecked=0, Total=2550 [2024-11-16 08:03:23,987 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 08:03:23,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 86 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 08:03:23,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-16 08:03:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2024-11-16 08:03:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 101 states have internal predecessors, (103), 30 states have call successors, (30), 21 states have call predecessors, (30), 23 states have return successors, (33), 30 states have call predecessors, (33), 28 states have call successors, (33) [2024-11-16 08:03:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2024-11-16 08:03:24,027 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 86 [2024-11-16 08:03:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:03:24,027 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2024-11-16 08:03:24,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.9) internal successors, (38), 22 states have internal predecessors, (38), 8 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 4 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-16 08:03:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2024-11-16 08:03:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-16 08:03:24,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:03:24,028 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 08:03:24,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 08:03:24,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 08:03:24,229 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:03:24,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:03:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1220494629, now seen corresponding path program 5 times [2024-11-16 08:03:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:03:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172416820] [2024-11-16 08:03:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:03:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:03:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:03:24,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835862435] [2024-11-16 08:03:24,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 08:03:24,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:03:24,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:03:24,253 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) [2024-11-16 08:03:24,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 08:03:24,522 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-16 08:03:24,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 08:03:24,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-16 08:03:24,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:03:24,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:24,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:24,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:24,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:24,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:24,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:25,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:25,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 1 proven. 235 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-16 08:03:25,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:03:25,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2024-11-16 08:03:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 53 proven. 32 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-16 08:03:26,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:03:26,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172416820] [2024-11-16 08:03:26,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:03:26,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835862435] [2024-11-16 08:03:26,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835862435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:03:26,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 08:03:26,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 32 [2024-11-16 08:03:26,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658100301] [2024-11-16 08:03:26,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 08:03:26,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 08:03:26,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:03:26,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 08:03:26,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-16 08:03:26,337 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand has 32 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 14 states have call successors, (32), 12 states have call predecessors, (32), 6 states have return successors, (24), 6 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-16 08:03:33,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-16 08:03:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:03:33,803 INFO L93 Difference]: Finished difference Result 223 states and 244 transitions. [2024-11-16 08:03:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-16 08:03:33,803 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 14 states have call successors, (32), 12 states have call predecessors, (32), 6 states have return successors, (24), 6 states have call predecessors, (24), 8 states have call successors, (24) Word has length 90 [2024-11-16 08:03:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:03:33,805 INFO L225 Difference]: With dead ends: 223 [2024-11-16 08:03:33,805 INFO L226 Difference]: Without dead ends: 220 [2024-11-16 08:03:33,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 127 SyntacticMatches, 22 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=593, Invalid=4099, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 08:03:33,806 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 278 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-16 08:03:33,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 417 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1559 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2024-11-16 08:03:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-16 08:03:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 197. [2024-11-16 08:03:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.0390625) internal successors, (133), 131 states have internal predecessors, (133), 36 states have call successors, (36), 28 states have call predecessors, (36), 32 states have return successors, (42), 37 states have call predecessors, (42), 34 states have call successors, (42) [2024-11-16 08:03:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 211 transitions. [2024-11-16 08:03:33,861 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 211 transitions. Word has length 90 [2024-11-16 08:03:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:03:33,861 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 211 transitions. [2024-11-16 08:03:33,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 14 states have call successors, (32), 12 states have call predecessors, (32), 6 states have return successors, (24), 6 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-16 08:03:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 211 transitions. [2024-11-16 08:03:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 08:03:33,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:03:33,862 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 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] [2024-11-16 08:03:33,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 08:03:34,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 08:03:34,063 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:03:34,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:03:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1693664747, now seen corresponding path program 1 times [2024-11-16 08:03:34,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:03:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447385405] [2024-11-16 08:03:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:03:34,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:03:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:03:34,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852790095] [2024-11-16 08:03:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:03:34,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:03:34,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:03:34,087 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) [2024-11-16 08:03:34,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 08:03:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:03:34,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-16 08:03:34,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:03:34,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:34,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:34,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 08:03:34,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:35,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:35,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:35,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:35,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 80 proven. 41 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-16 08:03:36,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:03:49,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:03:49,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447385405] [2024-11-16 08:03:49,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 08:03:49,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852790095] [2024-11-16 08:03:49,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852790095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:03:49,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:03:49,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-16 08:03:49,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2450598] [2024-11-16 08:03:49,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 08:03:49,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 08:03:49,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:03:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 08:03:49,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=514, Unknown=2, NotChecked=0, Total=600 [2024-11-16 08:03:49,172 INFO L87 Difference]: Start difference. First operand 197 states and 211 transitions. Second operand has 21 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-16 08:03:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:03:50,681 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2024-11-16 08:03:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 08:03:50,681 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 92 [2024-11-16 08:03:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:03:50,682 INFO L225 Difference]: With dead ends: 207 [2024-11-16 08:03:50,682 INFO L226 Difference]: Without dead ends: 204 [2024-11-16 08:03:50,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=155, Invalid=965, Unknown=2, NotChecked=0, Total=1122 [2024-11-16 08:03:50,683 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:03:50,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 84 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 08:03:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-16 08:03:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2024-11-16 08:03:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 134 states have internal predecessors, (136), 36 states have call successors, (36), 29 states have call predecessors, (36), 33 states have return successors, (42), 37 states have call predecessors, (42), 34 states have call successors, (42) [2024-11-16 08:03:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 214 transitions. [2024-11-16 08:03:50,748 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 214 transitions. Word has length 92 [2024-11-16 08:03:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:03:50,748 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 214 transitions. [2024-11-16 08:03:50,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-16 08:03:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 214 transitions. [2024-11-16 08:03:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-16 08:03:50,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:03:50,749 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 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] [2024-11-16 08:03:50,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 08:03:50,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:03:50,949 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:03:50,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:03:50,950 INFO L85 PathProgramCache]: Analyzing trace with hash -779166912, now seen corresponding path program 1 times [2024-11-16 08:03:50,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:03:50,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691342672] [2024-11-16 08:03:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:03:50,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:03:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 08:03:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488032745] [2024-11-16 08:03:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:03:50,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:03:50,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:03:50,975 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) [2024-11-16 08:03:50,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 08:03:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:03:51,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-16 08:03:51,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:03:51,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:51,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:51,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 08:03:51,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:51,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 08:03:51,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11