./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-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 0f77dea8ac4e90769e7f79fe586c3bc8814d52e2350b8c4d8b140363f12c9ac8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 03:18:52,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 03:18:52,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 03:18:52,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 03:18:52,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 03:18:52,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 03:18:52,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 03:18:52,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 03:18:52,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 03:18:52,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 03:18:52,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 03:18:52,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 03:18:52,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 03:18:52,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 03:18:52,245 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 03:18:52,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 03:18:52,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 03:18:52,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 03:18:52,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 03:18:52,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 03:18:52,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 03:18:52,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 03:18:52,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 03:18:52,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 03:18:52,251 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 03:18:52,252 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 03:18:52,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 03:18:52,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 03:18:52,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 03:18:52,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 03:18:52,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 03:18:52,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 03:18:52,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:18:52,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 03:18:52,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 03:18:52,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 03:18:52,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 03:18:52,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 03:18:52,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 03:18:52,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 03:18:52,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 03:18:52,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 03:18:52,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f77dea8ac4e90769e7f79fe586c3bc8814d52e2350b8c4d8b140363f12c9ac8 [2024-10-14 03:18:52,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 03:18:52,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 03:18:52,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 03:18:52,481 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 03:18:52,482 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 03:18:52,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2024-10-14 03:18:53,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 03:18:53,984 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 03:18:53,984 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2024-10-14 03:18:53,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de4a38d3/8f4ecfba2ed941b780aaa04d0cd59245/FLAGc4c290bdb [2024-10-14 03:18:54,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de4a38d3/8f4ecfba2ed941b780aaa04d0cd59245 [2024-10-14 03:18:54,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 03:18:54,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 03:18:54,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 03:18:54,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 03:18:54,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 03:18:54,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0e1d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54, skipping insertion in model container [2024-10-14 03:18:54,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 03:18:54,582 WARN L248 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_geo3-ll.c[1055,1068] [2024-10-14 03:18:54,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:18:54,620 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 03:18:54,632 WARN L248 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_geo3-ll.c[1055,1068] [2024-10-14 03:18:54,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:18:54,657 INFO L204 MainTranslator]: Completed translation [2024-10-14 03:18:54,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54 WrapperNode [2024-10-14 03:18:54,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 03:18:54,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 03:18:54,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 03:18:54,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 03:18:54,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,693 INFO L138 Inliner]: procedures = 16, calls = 66, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 85 [2024-10-14 03:18:54,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 03:18:54,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 03:18:54,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 03:18:54,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 03:18:54,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,706 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,722 INFO L175 MemorySlicer]: Split 36 memory accesses to 8 slices as follows [2, 4, 6, 2, 8, 3, 5, 6]. 22 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 10 writes are split as follows [0, 2, 1, 1, 2, 1, 2, 1]. [2024-10-14 03:18:54,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 03:18:54,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 03:18:54,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 03:18:54,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 03:18:54,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (1/1) ... [2024-10-14 03:18:54,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:18:54,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:18:54,782 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) [2024-10-14 03:18:54,785 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 [2024-10-14 03:18:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 03:18:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 03:18:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 03:18:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 03:18:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 03:18:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 03:18:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 03:18:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 03:18:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 03:18:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-10-14 03:18:54,853 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 03:18:54,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 03:18:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 03:18:54,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 03:18:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 03:18:55,000 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 03:18:55,003 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 03:18:55,174 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-10-14 03:18:55,174 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 03:18:55,203 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 03:18:55,203 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 03:18:55,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:18:55 BoogieIcfgContainer [2024-10-14 03:18:55,203 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 03:18:55,205 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 03:18:55,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 03:18:55,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 03:18:55,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:18:54" (1/3) ... [2024-10-14 03:18:55,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54576070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:18:55, skipping insertion in model container [2024-10-14 03:18:55,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:18:54" (2/3) ... [2024-10-14 03:18:55,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54576070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:18:55, skipping insertion in model container [2024-10-14 03:18:55,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:18:55" (3/3) ... [2024-10-14 03:18:55,210 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo3-ll.c [2024-10-14 03:18:55,222 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 03:18:55,222 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 03:18:55,265 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 03:18:55,272 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;@7038022a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 03:18:55,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 03:18:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 03:18:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 03:18:55,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:18:55,285 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:18:55,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:18:55,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:18:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1288934217, now seen corresponding path program 1 times [2024-10-14 03:18:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:18:55,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341966455] [2024-10-14 03:18:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:18:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:18:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 03:18:55,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479039895] [2024-10-14 03:18:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:18:55,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:18:55,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:18:55,493 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) [2024-10-14 03:18:55,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 03:18:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:18:55,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-10-14 03:18:55,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:18:55,698 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 21 treesize of output 17 [2024-10-14 03:18:55,708 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 [2024-10-14 03:18:55,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 03:18:55,723 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 15 treesize of output 1 [2024-10-14 03:18:55,727 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 [2024-10-14 03:18:55,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-10-14 03:18:55,913 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 32 treesize of output 20 [2024-10-14 03:18:55,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-10-14 03:18:55,938 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 17 treesize of output 9 [2024-10-14 03:18:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:18:56,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 03:18:56,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:18:56,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341966455] [2024-10-14 03:18:56,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 03:18:56,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479039895] [2024-10-14 03:18:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479039895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:18:56,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:18:56,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 03:18:56,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662454735] [2024-10-14 03:18:56,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:18:56,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 03:18:56,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:18:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 03:18:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 03:18:56,055 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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) [2024-10-14 03:18:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:18:56,384 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2024-10-14 03:18:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 03:18:56,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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 8 [2024-10-14 03:18:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:18:56,394 INFO L225 Difference]: With dead ends: 50 [2024-10-14 03:18:56,394 INFO L226 Difference]: Without dead ends: 30 [2024-10-14 03:18:56,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 03:18:56,401 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 03:18:56,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 77 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 03:18:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-14 03:18:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-10-14 03:18:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-14 03:18:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-10-14 03:18:56,442 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2024-10-14 03:18:56,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:18:56,443 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-10-14 03:18:56,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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) [2024-10-14 03:18:56,444 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-10-14 03:18:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 03:18:56,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:18:56,445 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:18:56,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 03:18:56,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-14 03:18:56,646 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:18:56,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:18:56,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1531368910, now seen corresponding path program 1 times [2024-10-14 03:18:56,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:18:56,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069482632] [2024-10-14 03:18:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:18:56,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:18:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 03:18:56,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487474182] [2024-10-14 03:18:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:18:56,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:18:56,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:18:56,735 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) [2024-10-14 03:18:56,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 03:18:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:18:57,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-10-14 03:18:57,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:18:57,233 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 [2024-10-14 03:18:57,240 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 21 treesize of output 17 [2024-10-14 03:18:57,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 03:18:57,257 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 [2024-10-14 03:18:57,263 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 [2024-10-14 03:18:57,788 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 23 treesize of output 15 [2024-10-14 03:18:57,798 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 39 treesize of output 27 [2024-10-14 03:18:57,889 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 59 treesize of output 43 [2024-10-14 03:18:57,893 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 15 treesize of output 7 [2024-10-14 03:18:57,899 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 40 treesize of output 24 [2024-10-14 03:18:57,904 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 17 treesize of output 9 [2024-10-14 03:18:57,909 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 26 treesize of output 14 [2024-10-14 03:18:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:18:57,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:19:09,601 WARN L851 $PredicateComparison]: unable to prove that (or (forall ((|func_to_recursive_line_30_to_38_0_#t~mem9| Int)) (not (= (mod (+ (* 18446744073709551615 |func_to_recursive_line_30_to_38_0_#t~mem9| |c_func_to_recursive_line_30_to_38_0_#t~mem8|) |c_func_to_recursive_line_30_to_38_0_#t~mem7| (* |c_func_to_recursive_line_30_to_38_0_#t~mem6| 18446744073709551615) (* |c_func_to_recursive_line_30_to_38_0_#t~mem4| |c_func_to_recursive_line_30_to_38_0_#t~mem5|)) 18446744073709551616) 0))) (= (mod (let ((.cse1 (select (select |c_#memory_int#4| c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset)) (.cse0 (select (select |c_#memory_int#7| c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset))) (+ (* 18446744073709551615 .cse0 .cse1) (* .cse0 (select (select |c_#memory_int#2| c_func_to_recursive_line_30_to_38_0_~a.base) c_func_to_recursive_line_30_to_38_0_~a.offset)) (* .cse0 .cse0 .cse1) (* 18446744073709551615 (select (select |c_#memory_int#6| c_func_to_recursive_line_30_to_38_0_~y.base) c_func_to_recursive_line_30_to_38_0_~y.offset) .cse0 (select (select |c_#memory_int#5| c_func_to_recursive_line_30_to_38_0_~az.base) c_func_to_recursive_line_30_to_38_0_~az.offset)))) 18446744073709551616) 0)) is different from false [2024-10-14 03:19:09,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:19:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069482632] [2024-10-14 03:19:09,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 03:19:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487474182] [2024-10-14 03:19:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487474182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:19:09,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 03:19:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-10-14 03:19:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789792789] [2024-10-14 03:19:09,623 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 03:19:09,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 03:19:09,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:19:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 03:19:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=257, Unknown=2, NotChecked=32, Total=342 [2024-10-14 03:19:09,625 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 03:19:11,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:19:11,109 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2024-10-14 03:19:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 03:19:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-10-14 03:19:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:19:11,112 INFO L225 Difference]: With dead ends: 53 [2024-10-14 03:19:11,112 INFO L226 Difference]: Without dead ends: 49 [2024-10-14 03:19:11,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=90, Invalid=418, Unknown=2, NotChecked=42, Total=552 [2024-10-14 03:19:11,114 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:19:11,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 116 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 03:19:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-14 03:19:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-10-14 03:19:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 33 states have internal predecessors, (35), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-14 03:19:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-10-14 03:19:11,126 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 18 [2024-10-14 03:19:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:19:11,126 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-10-14 03:19:11,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 03:19:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-10-14 03:19:11,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 03:19:11,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:19:11,127 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:19:11,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 03:19:11,327 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,SelfDestructingSolverStorable1 [2024-10-14 03:19:11,328 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:19:11,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:19:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1152056984, now seen corresponding path program 1 times [2024-10-14 03:19:11,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:19:11,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730611113] [2024-10-14 03:19:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:19:11,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:19:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 03:19:11,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827460516] [2024-10-14 03:19:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:19:11,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:19:11,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:19:11,371 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) [2024-10-14 03:19:11,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 03:19:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:19:11,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-10-14 03:19:11,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:19:11,522 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 21 treesize of output 17 [2024-10-14 03:19:11,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 03:19:11,536 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 15 treesize of output 1 [2024-10-14 03:19:11,540 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 15 treesize of output 1 [2024-10-14 03:19:11,545 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 [2024-10-14 03:19:11,563 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 [2024-10-14 03:19:15,747 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#az~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#z~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#z~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#a~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#az~0#1.offset_BEFORE_CALL_3| Int)) (= (* (select (select |c_#memory_int#2| |v_ULTIMATE.start_main_~#a~0#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_3|) (select (select |c_#memory_int#7| |v_ULTIMATE.start_main_~#z~0#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_main_~#z~0#1.offset_BEFORE_CALL_3|)) (select (select |c_#memory_int#5| |v_ULTIMATE.start_main_~#az~0#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_main_~#az~0#1.offset_BEFORE_CALL_3|))) is different from true [2024-10-14 03:19:16,211 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 66 treesize of output 46 [2024-10-14 03:19:16,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 03:19:16,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 72 [2024-10-14 03:19:16,252 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 32 treesize of output 24 [2024-10-14 03:19:16,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 03:19:16,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 50 [2024-10-14 03:19:16,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 03:19:16,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 47 [2024-10-14 03:19:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-14 03:19:16,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:19:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:19:20,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:19:20,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730611113] [2024-10-14 03:19:20,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 03:19:20,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827460516] [2024-10-14 03:19:20,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827460516] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:19:20,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 03:19:20,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-10-14 03:19:20,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261485801] [2024-10-14 03:19:20,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 03:19:20,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 03:19:20,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:19:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 03:19:20,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=325, Unknown=1, NotChecked=36, Total=420 [2024-10-14 03:19:20,290 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 03:19:25,343 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 [0] [2024-10-14 03:19:29,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 03:19:34,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 03:19:37,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 03:19:42,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 03:19:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:19:42,360 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2024-10-14 03:19:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 03:19:42,360 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2024-10-14 03:19:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:19:42,361 INFO L225 Difference]: With dead ends: 51 [2024-10-14 03:19:42,361 INFO L226 Difference]: Without dead ends: 43 [2024-10-14 03:19:42,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=108, Invalid=545, Unknown=1, NotChecked=48, Total=702 [2024-10-14 03:19:42,363 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2024-10-14 03:19:42,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 66 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 194 Invalid, 4 Unknown, 39 Unchecked, 21.4s Time] [2024-10-14 03:19:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-14 03:19:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-10-14 03:19:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 30 states have internal predecessors, (31), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-14 03:19:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-10-14 03:19:42,373 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2024-10-14 03:19:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:19:42,373 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-10-14 03:19:42,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 03:19:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-10-14 03:19:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 03:19:42,374 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:19:42,374 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-14 03:19:42,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 03:19:42,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:19:42,575 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:19:42,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:19:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1488850469, now seen corresponding path program 2 times [2024-10-14 03:19:42,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:19:42,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351334051] [2024-10-14 03:19:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:19:42,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:19:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 03:19:42,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453944989] [2024-10-14 03:19:42,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 03:19:42,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:19:42,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:19:42,660 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) [2024-10-14 03:19:42,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 03:19:49,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 03:19:49,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 03:19:49,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-10-14 03:19:49,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:19:49,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 03:19:49,596 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 [2024-10-14 03:19:49,604 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 [2024-10-14 03:19:49,606 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 21 treesize of output 17 [2024-10-14 03:19:49,613 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 [2024-10-14 03:19:49,788 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 23 treesize of output 15 [2024-10-14 03:19:49,794 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 39 treesize of output 27 [2024-10-14 03:19:59,692 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 33 treesize of output 21 [2024-10-14 03:19:59,706 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 51 treesize of output 39 [2024-10-14 03:20:07,884 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 81 treesize of output 53 [2024-10-14 03:20:07,890 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 48 treesize of output 28 [2024-10-14 03:20:07,893 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 18 [2024-10-14 03:20:07,900 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 17 treesize of output 9 [2024-10-14 03:20:07,905 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 17 treesize of output 9 [2024-10-14 03:20:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:20:07,984 INFO L311 TraceCheckSpWp]: Computing backward predicates...