./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:28:43,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:28:43,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 16:28:43,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:28:43,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:28:43,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:28:43,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:28:43,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:28:43,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 16:28:43,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 16:28:43,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:28:43,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:28:43,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:28:43,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:28:43,581 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:28:43,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:28:43,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:28:43,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:28:43,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:28:43,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:28:43,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:28:43,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:28:43,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:28:43,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:28:43,584 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:28:43,585 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:28:43,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:28:43,585 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:28:43,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:28:43,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:28:43,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 16:28:43,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:28:43,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:28:43,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:28:43,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:28:43,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:28:43,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:28:43,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:28:43,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:28:43,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:28:43,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:28:43,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:28:43,590 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2024-10-11 16:28:43,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:28:43,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:28:43,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:28:43,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:28:43,842 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:28:43,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2024-10-11 16:28:45,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:28:45,540 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:28:45,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2024-10-11 16:28:45,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7fbea7b06/a5a70c798dba4ab2930e5545c72df755/FLAGe7dbcfa8f [2024-10-11 16:28:45,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7fbea7b06/a5a70c798dba4ab2930e5545c72df755 [2024-10-11 16:28:45,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:28:45,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:28:45,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:28:45,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:28:45,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:28:45,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:28:45" (1/1) ... [2024-10-11 16:28:45,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202da9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:45, skipping insertion in model container [2024-10-11 16:28:45,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:28:45" (1/1) ... [2024-10-11 16:28:45,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:28:46,265 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/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2024-10-11 16:28:46,374 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/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2024-10-11 16:28:46,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:28:46,398 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:28:46,437 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/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2024-10-11 16:28:46,500 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/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2024-10-11 16:28:46,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:28:46,547 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:28:46,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46 WrapperNode [2024-10-11 16:28:46,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:28:46,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:28:46,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:28:46,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:28:46,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,655 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-10-11 16:28:46,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:28:46,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:28:46,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:28:46,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:28:46,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,809 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2024-10-11 16:28:46,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:28:46,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:28:46,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:28:46,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:28:46,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (1/1) ... [2024-10-11 16:28:46,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:28:46,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:28:46,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:28:46,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:28:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 16:28:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 16:28:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 16:28:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 16:28:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 16:28:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 16:28:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 16:28:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 16:28:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-11 16:28:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-11 16:28:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-11 16:28:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-11 16:28:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-11 16:28:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-11 16:28:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-10-11 16:28:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-10-11 16:28:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 16:28:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 16:28:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 16:28:46,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 16:28:46,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 16:28:46,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:28:46,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:28:47,187 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:28:47,189 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:28:48,517 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-10-11 16:28:48,518 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:28:48,615 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:28:48,615 INFO L314 CfgBuilder]: Removed 62 assume(true) statements. [2024-10-11 16:28:48,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:28:48 BoogieIcfgContainer [2024-10-11 16:28:48,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:28:48,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:28:48,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:28:48,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:28:48,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:28:45" (1/3) ... [2024-10-11 16:28:48,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f20558b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:28:48, skipping insertion in model container [2024-10-11 16:28:48,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:28:46" (2/3) ... [2024-10-11 16:28:48,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f20558b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:28:48, skipping insertion in model container [2024-10-11 16:28:48,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:28:48" (3/3) ... [2024-10-11 16:28:48,627 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-1.i [2024-10-11 16:28:48,642 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:28:48,643 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 16:28:48,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:28:48,770 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;@5b3c9eb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:28:48,771 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 16:28:48,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 430 states, 404 states have (on average 1.636138613861386) internal successors, (661), 421 states have internal predecessors, (661), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-11 16:28:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 16:28:48,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:48,787 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:48,788 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:48,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1181736163, now seen corresponding path program 1 times [2024-10-11 16:28:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:48,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50466462] [2024-10-11 16:28:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:48,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:28:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:28:48,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:28:48,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50466462] [2024-10-11 16:28:48,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50466462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:28:48,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:28:48,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:28:48,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457916067] [2024-10-11 16:28:48,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:28:48,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:28:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:28:49,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:28:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:28:49,011 INFO L87 Difference]: Start difference. First operand has 430 states, 404 states have (on average 1.636138613861386) internal successors, (661), 421 states have internal predecessors, (661), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:28:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:28:49,107 INFO L93 Difference]: Finished difference Result 859 states and 1418 transitions. [2024-10-11 16:28:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:28:49,110 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-11 16:28:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:28:49,131 INFO L225 Difference]: With dead ends: 859 [2024-10-11 16:28:49,131 INFO L226 Difference]: Without dead ends: 428 [2024-10-11 16:28:49,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:28:49,146 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:28:49,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 628 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 16:28:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-11 16:28:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-10-11 16:28:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 403 states have (on average 1.466501240694789) internal successors, (591), 419 states have internal predecessors, (591), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-11 16:28:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2024-10-11 16:28:49,219 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 8 [2024-10-11 16:28:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:28:49,220 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2024-10-11 16:28:49,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:28:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2024-10-11 16:28:49,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 16:28:49,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:49,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:49,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:28:49,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:49,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash 182152541, now seen corresponding path program 1 times [2024-10-11 16:28:49,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:49,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093545627] [2024-10-11 16:28:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:49,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:28:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:28:49,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:28:49,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093545627] [2024-10-11 16:28:49,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093545627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:28:49,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:28:49,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:28:49,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133512614] [2024-10-11 16:28:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:28:49,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:28:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:28:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:28:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:28:49,699 INFO L87 Difference]: Start difference. First operand 428 states and 631 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:28:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:28:49,863 INFO L93 Difference]: Finished difference Result 1039 states and 1531 transitions. [2024-10-11 16:28:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:28:49,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-11 16:28:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:28:49,870 INFO L225 Difference]: With dead ends: 1039 [2024-10-11 16:28:49,870 INFO L226 Difference]: Without dead ends: 812 [2024-10-11 16:28:49,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:28:49,873 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 546 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:28:49,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1821 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:28:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-11 16:28:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 430. [2024-10-11 16:28:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4641975308641975) internal successors, (593), 421 states have internal predecessors, (593), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-11 16:28:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2024-10-11 16:28:49,919 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2024-10-11 16:28:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:28:49,919 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2024-10-11 16:28:49,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:28:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2024-10-11 16:28:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 16:28:49,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:49,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:49,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:28:49,925 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:49,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:49,927 INFO L85 PathProgramCache]: Analyzing trace with hash 205336912, now seen corresponding path program 1 times [2024-10-11 16:28:49,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:49,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336967719] [2024-10-11 16:28:49,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:49,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:28:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:28:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:28:50,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336967719] [2024-10-11 16:28:50,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336967719] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:28:50,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:28:50,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 16:28:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074135105] [2024-10-11 16:28:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:28:50,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:28:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:28:50,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:28:50,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:28:50,305 INFO L87 Difference]: Start difference. First operand 430 states and 633 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:28:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:28:50,416 INFO L93 Difference]: Finished difference Result 815 states and 1197 transitions. [2024-10-11 16:28:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 16:28:50,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 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 84 [2024-10-11 16:28:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:28:50,420 INFO L225 Difference]: With dead ends: 815 [2024-10-11 16:28:50,422 INFO L226 Difference]: Without dead ends: 388 [2024-10-11 16:28:50,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:28:50,424 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 30 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:28:50,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1558 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:28:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-10-11 16:28:50,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-10-11 16:28:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 363 states have (on average 1.421487603305785) internal successors, (516), 379 states have internal predecessors, (516), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-11 16:28:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 556 transitions. [2024-10-11 16:28:50,445 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 556 transitions. Word has length 84 [2024-10-11 16:28:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:28:50,445 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 556 transitions. [2024-10-11 16:28:50,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:28:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 556 transitions. [2024-10-11 16:28:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 16:28:50,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:50,451 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:50,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:28:50,452 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:50,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 361770564, now seen corresponding path program 1 times [2024-10-11 16:28:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:50,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002625140] [2024-10-11 16:28:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:28:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:28:50,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:28:50,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002625140] [2024-10-11 16:28:50,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002625140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:28:50,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:28:50,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:28:50,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143207372] [2024-10-11 16:28:50,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:28:50,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:28:50,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:28:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:28:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:28:50,625 INFO L87 Difference]: Start difference. First operand 388 states and 556 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:28:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:28:50,744 INFO L93 Difference]: Finished difference Result 1025 states and 1471 transitions. [2024-10-11 16:28:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:28:50,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 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 84 [2024-10-11 16:28:50,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:28:50,748 INFO L225 Difference]: With dead ends: 1025 [2024-10-11 16:28:50,748 INFO L226 Difference]: Without dead ends: 640 [2024-10-11 16:28:50,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:28:50,752 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 295 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:28:50,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1251 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:28:50,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-10-11 16:28:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-10-11 16:28:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 611 states have (on average 1.4271685761047463) internal successors, (872), 627 states have internal predecessors, (872), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:28:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 914 transitions. [2024-10-11 16:28:50,806 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 914 transitions. Word has length 84 [2024-10-11 16:28:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:28:50,808 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 914 transitions. [2024-10-11 16:28:50,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:28:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 914 transitions. [2024-10-11 16:28:50,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 16:28:50,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:50,811 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:50,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:28:50,812 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:50,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1829937834, now seen corresponding path program 1 times [2024-10-11 16:28:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055021812] [2024-10-11 16:28:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:50,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:28:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:51,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:28:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:51,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:28:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:28:51,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:28:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055021812] [2024-10-11 16:28:51,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055021812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:28:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889076858] [2024-10-11 16:28:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:51,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:28:51,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:28:51,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:28:51,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 16:28:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:52,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 16:28:52,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:28:52,067 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 [2024-10-11 16:28:52,102 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 22 treesize of output 7 [2024-10-11 16:28:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:28:52,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:28:52,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889076858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:28:52,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:28:52,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2024-10-11 16:28:52,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262165784] [2024-10-11 16:28:52,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:28:52,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:28:52,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:28:52,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:28:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:28:52,876 INFO L87 Difference]: Start difference. First operand 637 states and 914 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:28:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:28:53,980 INFO L93 Difference]: Finished difference Result 1529 states and 2195 transitions. [2024-10-11 16:28:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:28:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 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 97 [2024-10-11 16:28:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:28:53,987 INFO L225 Difference]: With dead ends: 1529 [2024-10-11 16:28:53,988 INFO L226 Difference]: Without dead ends: 935 [2024-10-11 16:28:53,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-10-11 16:28:53,991 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 592 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 16:28:53,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 2874 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 16:28:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-10-11 16:28:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 637. [2024-10-11 16:28:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 611 states have (on average 1.425531914893617) internal successors, (871), 627 states have internal predecessors, (871), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:28:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 913 transitions. [2024-10-11 16:28:54,019 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 913 transitions. Word has length 97 [2024-10-11 16:28:54,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:28:54,020 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 913 transitions. [2024-10-11 16:28:54,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:28:54,021 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 913 transitions. [2024-10-11 16:28:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-11 16:28:54,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:54,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:54,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 16:28:54,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:28:54,225 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:54,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:54,226 INFO L85 PathProgramCache]: Analyzing trace with hash -226937138, now seen corresponding path program 1 times [2024-10-11 16:28:54,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:54,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822183182] [2024-10-11 16:28:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:54,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:28:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:54,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-11 16:28:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:54,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 16:28:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:28:54,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:28:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822183182] [2024-10-11 16:28:54,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822183182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:28:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680237753] [2024-10-11 16:28:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:54,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:28:54,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:28:54,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:28:54,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 16:28:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:55,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 16:28:55,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:28:55,043 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 [2024-10-11 16:28:55,063 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 22 treesize of output 7 [2024-10-11 16:28:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:28:55,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:28:55,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680237753] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:28:55,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:28:55,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-11 16:28:55,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208282175] [2024-10-11 16:28:55,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:28:55,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 16:28:55,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:28:55,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 16:28:55,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:28:55,847 INFO L87 Difference]: Start difference. First operand 637 states and 913 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:28:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:28:57,369 INFO L93 Difference]: Finished difference Result 1544 states and 2215 transitions. [2024-10-11 16:28:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 16:28:57,370 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 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 98 [2024-10-11 16:28:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:28:57,377 INFO L225 Difference]: With dead ends: 1544 [2024-10-11 16:28:57,377 INFO L226 Difference]: Without dead ends: 955 [2024-10-11 16:28:57,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-10-11 16:28:57,380 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 655 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:28:57,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 3324 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-11 16:28:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-10-11 16:28:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 653. [2024-10-11 16:28:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 627 states have (on average 1.4210526315789473) internal successors, (891), 643 states have internal predecessors, (891), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:28:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 933 transitions. [2024-10-11 16:28:57,408 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 933 transitions. Word has length 98 [2024-10-11 16:28:57,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:28:57,409 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 933 transitions. [2024-10-11 16:28:57,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:28:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 933 transitions. [2024-10-11 16:28:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 16:28:57,410 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:57,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:57,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 16:28:57,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:28:57,611 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:57,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2142865002, now seen corresponding path program 1 times [2024-10-11 16:28:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:57,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629519282] [2024-10-11 16:28:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:28:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:57,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 16:28:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:57,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 16:28:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:28:57,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:28:57,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629519282] [2024-10-11 16:28:57,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629519282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:28:57,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:28:57,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 16:28:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044245194] [2024-10-11 16:28:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:28:57,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 16:28:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:28:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 16:28:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:28:57,933 INFO L87 Difference]: Start difference. First operand 653 states and 933 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:28:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:28:58,763 INFO L93 Difference]: Finished difference Result 1261 states and 1817 transitions. [2024-10-11 16:28:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:28:58,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 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 99 [2024-10-11 16:28:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:28:58,768 INFO L225 Difference]: With dead ends: 1261 [2024-10-11 16:28:58,768 INFO L226 Difference]: Without dead ends: 665 [2024-10-11 16:28:58,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:28:58,770 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 68 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 16:28:58,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2790 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 16:28:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-11 16:28:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 661. [2024-10-11 16:28:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 635 states have (on average 1.4188976377952756) internal successors, (901), 651 states have internal predecessors, (901), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:28:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 943 transitions. [2024-10-11 16:28:58,800 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 943 transitions. Word has length 99 [2024-10-11 16:28:58,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:28:58,800 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 943 transitions. [2024-10-11 16:28:58,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:28:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 943 transitions. [2024-10-11 16:28:58,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 16:28:58,803 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:58,803 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:58,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:28:58,805 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:58,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:58,805 INFO L85 PathProgramCache]: Analyzing trace with hash -62021711, now seen corresponding path program 1 times [2024-10-11 16:28:58,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:58,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565890392] [2024-10-11 16:28:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:58,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:28:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:59,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 16:28:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:59,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 16:28:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:28:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:28:59,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:28:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565890392] [2024-10-11 16:28:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565890392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:28:59,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:28:59,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 16:28:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698518269] [2024-10-11 16:28:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:28:59,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:28:59,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:28:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:28:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:28:59,203 INFO L87 Difference]: Start difference. First operand 661 states and 943 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:28:59,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:28:59,837 INFO L93 Difference]: Finished difference Result 1276 states and 1837 transitions. [2024-10-11 16:28:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:28:59,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 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 99 [2024-10-11 16:28:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:28:59,842 INFO L225 Difference]: With dead ends: 1276 [2024-10-11 16:28:59,842 INFO L226 Difference]: Without dead ends: 669 [2024-10-11 16:28:59,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:28:59,844 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 63 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 16:28:59,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2423 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 16:28:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-11 16:28:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2024-10-11 16:28:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 641 states have (on average 1.4149765990639624) internal successors, (907), 657 states have internal predecessors, (907), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:28:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 949 transitions. [2024-10-11 16:28:59,865 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 949 transitions. Word has length 99 [2024-10-11 16:28:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:28:59,865 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 949 transitions. [2024-10-11 16:28:59,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:28:59,866 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 949 transitions. [2024-10-11 16:28:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-11 16:28:59,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:28:59,868 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:28:59,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 16:28:59,869 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:28:59,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:28:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1077123426, now seen corresponding path program 1 times [2024-10-11 16:28:59,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:28:59,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852541470] [2024-10-11 16:28:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:28:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:00,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:29:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:00,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-11 16:29:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:29:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:00,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852541470] [2024-10-11 16:29:00,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852541470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:00,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816713003] [2024-10-11 16:29:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:00,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:00,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:00,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 16:29:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:00,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 16:29:00,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:29:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:29:00,663 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:29:00,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816713003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:29:00,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:29:00,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-11 16:29:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296959698] [2024-10-11 16:29:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:29:00,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:29:00,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:29:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:29:00,665 INFO L87 Difference]: Start difference. First operand 667 states and 949 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:00,966 INFO L93 Difference]: Finished difference Result 1290 states and 1849 transitions. [2024-10-11 16:29:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:29:00,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 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 100 [2024-10-11 16:29:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:00,969 INFO L225 Difference]: With dead ends: 1290 [2024-10-11 16:29:00,969 INFO L226 Difference]: Without dead ends: 673 [2024-10-11 16:29:00,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-11 16:29:00,971 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 43 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:00,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2851 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:29:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-10-11 16:29:00,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 655. [2024-10-11 16:29:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 629 states have (on average 1.4133545310015898) internal successors, (889), 645 states have internal predecessors, (889), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:29:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 931 transitions. [2024-10-11 16:29:00,993 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 931 transitions. Word has length 100 [2024-10-11 16:29:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:00,993 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 931 transitions. [2024-10-11 16:29:00,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:00,994 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 931 transitions. [2024-10-11 16:29:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-11 16:29:00,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:00,995 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:01,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 16:29:01,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:01,196 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:01,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:01,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1473683765, now seen corresponding path program 1 times [2024-10-11 16:29:01,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:01,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399913982] [2024-10-11 16:29:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:01,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:01,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:29:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:01,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-11 16:29:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:29:01,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399913982] [2024-10-11 16:29:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399913982] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359668927] [2024-10-11 16:29:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:01,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:01,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:01,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:01,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 16:29:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:02,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 16:29:02,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:29:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:29:02,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:29:02,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359668927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:29:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:29:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-11 16:29:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388608656] [2024-10-11 16:29:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:29:02,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:29:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:29:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:29:02,294 INFO L87 Difference]: Start difference. First operand 655 states and 931 transitions. Second operand has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:02,335 INFO L93 Difference]: Finished difference Result 1213 states and 1738 transitions. [2024-10-11 16:29:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:29:02,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-11 16:29:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:02,339 INFO L225 Difference]: With dead ends: 1213 [2024-10-11 16:29:02,339 INFO L226 Difference]: Without dead ends: 657 [2024-10-11 16:29:02,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:29:02,341 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 0 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:02,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1619 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 16:29:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-10-11 16:29:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2024-10-11 16:29:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 630 states have (on average 1.4142857142857144) internal successors, (891), 647 states have internal predecessors, (891), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:29:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-11 16:29:02,361 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 100 [2024-10-11 16:29:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:02,362 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-11 16:29:02,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-11 16:29:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-11 16:29:02,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:02,363 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:02,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 16:29:02,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 16:29:02,564 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:02,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash -499051429, now seen corresponding path program 1 times [2024-10-11 16:29:02,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:02,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931218021] [2024-10-11 16:29:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:02,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:02,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:29:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:03,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-11 16:29:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:29:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931218021] [2024-10-11 16:29:03,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931218021] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101546096] [2024-10-11 16:29:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:03,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:03,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:03,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:03,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 16:29:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:03,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 16:29:03,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:29:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 16:29:19,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:29:19,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101546096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:29:19,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:29:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 16:29:19,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598384956] [2024-10-11 16:29:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:29:19,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:29:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:19,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:29:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:29:19,658 INFO L87 Difference]: Start difference. First operand 657 states and 934 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:21,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:29:26,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:29:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:26,695 INFO L93 Difference]: Finished difference Result 1262 states and 1810 transitions. [2024-10-11 16:29:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:29:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 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 102 [2024-10-11 16:29:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:26,699 INFO L225 Difference]: With dead ends: 1262 [2024-10-11 16:29:26,699 INFO L226 Difference]: Without dead ends: 667 [2024-10-11 16:29:26,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:29:26,701 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 12 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:26,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2830 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 442 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2024-10-11 16:29:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-10-11 16:29:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 657. [2024-10-11 16:29:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 630 states have (on average 1.4142857142857144) internal successors, (891), 647 states have internal predecessors, (891), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:29:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-11 16:29:26,725 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 102 [2024-10-11 16:29:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:26,725 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-11 16:29:26,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-11 16:29:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:29:26,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:26,727 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:26,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 16:29:26,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 16:29:26,928 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:26,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash -96105653, now seen corresponding path program 1 times [2024-10-11 16:29:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956074301] [2024-10-11 16:29:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:27,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:29:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:27,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:29:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 16:29:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:27,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956074301] [2024-10-11 16:29:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956074301] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:29:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:29:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 16:29:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431572303] [2024-10-11 16:29:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:29:27,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:29:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:29:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:29:27,435 INFO L87 Difference]: Start difference. First operand 657 states and 934 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:28,520 INFO L93 Difference]: Finished difference Result 1284 states and 1839 transitions. [2024-10-11 16:29:28,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:29:28,520 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 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 104 [2024-10-11 16:29:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:28,523 INFO L225 Difference]: With dead ends: 1284 [2024-10-11 16:29:28,524 INFO L226 Difference]: Without dead ends: 689 [2024-10-11 16:29:28,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-11 16:29:28,525 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 77 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:28,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 4042 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 16:29:28,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-10-11 16:29:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 677. [2024-10-11 16:29:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 650 states have (on average 1.4076923076923078) internal successors, (915), 667 states have internal predecessors, (915), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:29:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 958 transitions. [2024-10-11 16:29:28,544 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 958 transitions. Word has length 104 [2024-10-11 16:29:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:28,545 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 958 transitions. [2024-10-11 16:29:28,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 958 transitions. [2024-10-11 16:29:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:29:28,546 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:28,546 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:28,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 16:29:28,547 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:28,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1180147247, now seen corresponding path program 1 times [2024-10-11 16:29:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146868525] [2024-10-11 16:29:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:28,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:29:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:28,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:29:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:29:28,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:28,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146868525] [2024-10-11 16:29:28,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146868525] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:28,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333832664] [2024-10-11 16:29:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:28,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:28,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:28,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:28,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 16:29:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:29,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 16:29:29,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:29:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 16:29:30,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:29:30,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333832664] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:29:30,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:29:30,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-10-11 16:29:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273582460] [2024-10-11 16:29:30,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:29:30,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:29:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:30,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:29:30,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:29:30,113 INFO L87 Difference]: Start difference. First operand 677 states and 958 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:31,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 16:29:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:32,262 INFO L93 Difference]: Finished difference Result 1312 states and 1873 transitions. [2024-10-11 16:29:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 16:29:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 1 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 104 [2024-10-11 16:29:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:32,266 INFO L225 Difference]: With dead ends: 1312 [2024-10-11 16:29:32,269 INFO L226 Difference]: Without dead ends: 707 [2024-10-11 16:29:32,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:29:32,270 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 17 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4278 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:32,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4278 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-11 16:29:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-11 16:29:32,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 701. [2024-10-11 16:29:32,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 674 states have (on average 1.4020771513353116) internal successors, (945), 691 states have internal predecessors, (945), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:29:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 988 transitions. [2024-10-11 16:29:32,297 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 988 transitions. Word has length 104 [2024-10-11 16:29:32,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:32,297 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 988 transitions. [2024-10-11 16:29:32,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 988 transitions. [2024-10-11 16:29:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:29:32,299 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:32,299 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:32,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 16:29:32,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 16:29:32,501 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:32,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1368588298, now seen corresponding path program 1 times [2024-10-11 16:29:32,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:32,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647087787] [2024-10-11 16:29:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:32,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:32,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:29:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:32,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:29:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:29:32,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647087787] [2024-10-11 16:29:32,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647087787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499585536] [2024-10-11 16:29:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:32,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:32,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:32,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:32,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 16:29:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:33,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 16:29:33,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:29:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 16:29:33,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:29:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499585536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:29:33,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:29:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 16:29:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206353345] [2024-10-11 16:29:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:29:33,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:29:33,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:29:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:29:33,820 INFO L87 Difference]: Start difference. First operand 701 states and 988 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:34,132 INFO L93 Difference]: Finished difference Result 1328 states and 1891 transitions. [2024-10-11 16:29:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:29:34,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 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 104 [2024-10-11 16:29:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:34,136 INFO L225 Difference]: With dead ends: 1328 [2024-10-11 16:29:34,137 INFO L226 Difference]: Without dead ends: 711 [2024-10-11 16:29:34,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:29:34,139 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 10 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:34,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2830 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:29:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-10-11 16:29:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 701. [2024-10-11 16:29:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 674 states have (on average 1.4020771513353116) internal successors, (945), 691 states have internal predecessors, (945), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:29:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 988 transitions. [2024-10-11 16:29:34,160 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 988 transitions. Word has length 104 [2024-10-11 16:29:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:34,161 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 988 transitions. [2024-10-11 16:29:34,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 988 transitions. [2024-10-11 16:29:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-11 16:29:34,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:34,162 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:34,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 16:29:34,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:34,363 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:34,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1943909614, now seen corresponding path program 1 times [2024-10-11 16:29:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:34,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890653861] [2024-10-11 16:29:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:34,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:29:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:34,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-11 16:29:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:29:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:34,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890653861] [2024-10-11 16:29:34,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890653861] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:34,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126724315] [2024-10-11 16:29:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:34,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:34,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:34,744 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:34,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 16:29:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:35,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 16:29:35,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:29:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:29:35,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:29:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:29:35,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126724315] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:29:35,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:29:35,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-11 16:29:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507702038] [2024-10-11 16:29:35,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:29:35,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:29:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:29:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:29:35,737 INFO L87 Difference]: Start difference. First operand 701 states and 988 transitions. Second operand has 11 states, 8 states have (on average 13.625) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 16:29:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:36,149 INFO L93 Difference]: Finished difference Result 1290 states and 1838 transitions. [2024-10-11 16:29:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 16:29:36,150 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 13.625) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2024-10-11 16:29:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:36,154 INFO L225 Difference]: With dead ends: 1290 [2024-10-11 16:29:36,154 INFO L226 Difference]: Without dead ends: 709 [2024-10-11 16:29:36,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:29:36,157 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 61 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:36,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2282 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:29:36,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-10-11 16:29:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-10-11 16:29:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 681 states have (on average 1.4038179148311307) internal successors, (956), 698 states have internal predecessors, (956), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-10-11 16:29:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1000 transitions. [2024-10-11 16:29:36,177 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1000 transitions. Word has length 105 [2024-10-11 16:29:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:36,177 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1000 transitions. [2024-10-11 16:29:36,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 13.625) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 16:29:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1000 transitions. [2024-10-11 16:29:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-11 16:29:36,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:36,179 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:36,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 16:29:36,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 16:29:36,380 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:36,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash -556429694, now seen corresponding path program 2 times [2024-10-11 16:29:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127268964] [2024-10-11 16:29:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:36,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:29:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:36,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-11 16:29:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 16:29:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127268964] [2024-10-11 16:29:36,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127268964] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358024978] [2024-10-11 16:29:36,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:29:36,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:36,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:36,903 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:36,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 16:29:38,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:29:38,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:29:38,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 16:29:38,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:29:38,786 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 [2024-10-11 16:29:38,806 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 22 treesize of output 7 [2024-10-11 16:29:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 16:29:39,494 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:29:39,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358024978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:29:39,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:29:39,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 16 [2024-10-11 16:29:39,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076877803] [2024-10-11 16:29:39,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:29:39,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:29:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:39,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:29:39,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:29:39,497 INFO L87 Difference]: Start difference. First operand 709 states and 1000 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:41,168 INFO L93 Difference]: Finished difference Result 1629 states and 2313 transitions. [2024-10-11 16:29:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:29:41,168 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 1 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 109 [2024-10-11 16:29:41,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:41,173 INFO L225 Difference]: With dead ends: 1629 [2024-10-11 16:29:41,173 INFO L226 Difference]: Without dead ends: 994 [2024-10-11 16:29:41,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-10-11 16:29:41,176 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 581 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:41,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 3614 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 16:29:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-10-11 16:29:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 696. [2024-10-11 16:29:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 668 states have (on average 1.407185628742515) internal successors, (940), 685 states have internal predecessors, (940), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-10-11 16:29:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 984 transitions. [2024-10-11 16:29:41,198 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 984 transitions. Word has length 109 [2024-10-11 16:29:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:41,198 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 984 transitions. [2024-10-11 16:29:41,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:29:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 984 transitions. [2024-10-11 16:29:41,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-11 16:29:41,199 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:41,200 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:41,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 16:29:41,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:41,401 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:41,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1974490594, now seen corresponding path program 1 times [2024-10-11 16:29:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:41,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671652777] [2024-10-11 16:29:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:41,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:41,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:29:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:41,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-11 16:29:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 16:29:41,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671652777] [2024-10-11 16:29:41,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671652777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734910392] [2024-10-11 16:29:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:41,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:41,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:41,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:41,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 16:29:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:42,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 16:29:42,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:29:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:29:42,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:29:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 9 refuted. 1 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 16:29:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734910392] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:29:46,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:29:46,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 20 [2024-10-11 16:29:46,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771577787] [2024-10-11 16:29:46,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:29:46,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 16:29:46,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:29:46,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 16:29:46,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=281, Unknown=1, NotChecked=0, Total=380 [2024-10-11 16:29:46,596 INFO L87 Difference]: Start difference. First operand 696 states and 984 transitions. Second operand has 20 states, 17 states have (on average 7.0) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 16:29:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:29:47,622 INFO L93 Difference]: Finished difference Result 1297 states and 1853 transitions. [2024-10-11 16:29:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 16:29:47,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.0) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 109 [2024-10-11 16:29:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:29:47,627 INFO L225 Difference]: With dead ends: 1297 [2024-10-11 16:29:47,627 INFO L226 Difference]: Without dead ends: 707 [2024-10-11 16:29:47,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=268, Invalid=661, Unknown=1, NotChecked=0, Total=930 [2024-10-11 16:29:47,630 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 87 mSDsluCounter, 4487 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 4949 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:29:47,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 4949 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 16:29:47,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-11 16:29:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2024-10-11 16:29:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 677 states have (on average 1.4091580502215657) internal successors, (954), 694 states have internal predecessors, (954), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:29:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 997 transitions. [2024-10-11 16:29:47,669 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 997 transitions. Word has length 109 [2024-10-11 16:29:47,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:29:47,669 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 997 transitions. [2024-10-11 16:29:47,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.0) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 16:29:47,669 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 997 transitions. [2024-10-11 16:29:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-11 16:29:47,670 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:29:47,671 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:29:47,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 16:29:47,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 16:29:47,872 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:29:47,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:29:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash 493496388, now seen corresponding path program 2 times [2024-10-11 16:29:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:29:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667339410] [2024-10-11 16:29:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:29:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:29:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:48,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:29:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:48,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-11 16:29:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:29:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-11 16:29:48,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:29:48,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667339410] [2024-10-11 16:29:48,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667339410] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:29:48,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112804476] [2024-10-11 16:29:48,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:29:48,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:29:48,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:29:48,492 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:29:48,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 16:29:59,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:29:59,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:29:59,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 16:29:59,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:30:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-10-11 16:30:09,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:30:09,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112804476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:30:09,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:30:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-11 16:30:09,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128233231] [2024-10-11 16:30:09,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:30:09,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:30:09,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:30:09,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:30:09,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-10-11 16:30:09,071 INFO L87 Difference]: Start difference. First operand 705 states and 997 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)