./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 22:49:21,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 22:49:21,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 22:49:21,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 22:49:21,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 22:49:21,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 22:49:21,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 22:49:21,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 22:49:21,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 22:49:21,872 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 22:49:21,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 22:49:21,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 22:49:21,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 22:49:21,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 22:49:21,878 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 22:49:21,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 22:49:21,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 22:49:21,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 22:49:21,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 22:49:21,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 22:49:21,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 22:49:21,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 22:49:21,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 22:49:21,882 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 22:49:21,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 22:49:21,883 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 22:49:21,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 22:49:21,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 22:49:21,884 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 22:49:21,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 22:49:21,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 22:49:21,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 22:49:21,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:49:21,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 22:49:21,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 22:49:21,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 22:49:21,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 22:49:21,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 22:49:21,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 22:49:21,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 22:49:21,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 22:49:21,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 22:49:21,888 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-16 22:49:22,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 22:49:22,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 22:49:22,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 22:49:22,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 22:49:22,211 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 22:49:22,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2024-11-16 22:49:23,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 22:49:23,910 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 22:49:23,915 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2024-11-16 22:49:23,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d867ea0/72f7ee9b884143c19f212da15002c5d8/FLAG30ba4b396 [2024-11-16 22:49:23,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d867ea0/72f7ee9b884143c19f212da15002c5d8 [2024-11-16 22:49:23,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 22:49:23,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 22:49:23,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 22:49:23,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 22:49:23,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 22:49:23,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:49:23" (1/1) ... [2024-11-16 22:49:23,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34625812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:23, skipping insertion in model container [2024-11-16 22:49:23,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:49:23" (1/1) ... [2024-11-16 22:49:24,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 22:49:24,426 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i[33519,33532] [2024-11-16 22:49:24,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:49:24,609 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 22:49:24,643 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i[33519,33532] [2024-11-16 22:49:24,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:49:24,772 INFO L204 MainTranslator]: Completed translation [2024-11-16 22:49:24,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24 WrapperNode [2024-11-16 22:49:24,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 22:49:24,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 22:49:24,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 22:49:24,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 22:49:24,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:24,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:24,884 INFO L138 Inliner]: procedures = 177, calls = 324, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1557 [2024-11-16 22:49:24,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 22:49:24,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 22:49:24,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 22:49:24,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 22:49:24,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:24,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:24,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:25,014 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 34, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-16 22:49:25,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:25,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:25,063 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:25,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:25,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:25,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:25,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 22:49:25,094 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 22:49:25,094 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 22:49:25,095 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 22:49:25,096 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (1/1) ... [2024-11-16 22:49:25,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:49:25,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:49:25,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 22:49:25,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 22:49:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 22:49:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 22:49:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 22:49:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 22:49:25,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 22:49:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 22:49:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 22:49:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 22:49:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 22:49:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 22:49:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 22:49:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 22:49:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 22:49:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 22:49:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 22:49:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 22:49:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 22:49:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 22:49:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 22:49:25,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 22:49:25,505 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 22:49:25,506 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 22:49:26,732 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-16 22:49:26,839 INFO L? ?]: Removed 337 outVars from TransFormulas that were not future-live. [2024-11-16 22:49:26,841 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 22:49:26,896 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 22:49:26,896 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-16 22:49:26,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:49:26 BoogieIcfgContainer [2024-11-16 22:49:26,897 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 22:49:26,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 22:49:26,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 22:49:26,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 22:49:26,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:49:23" (1/3) ... [2024-11-16 22:49:26,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c57b2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:49:26, skipping insertion in model container [2024-11-16 22:49:26,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:49:24" (2/3) ... [2024-11-16 22:49:26,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c57b2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:49:26, skipping insertion in model container [2024-11-16 22:49:26,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:49:26" (3/3) ... [2024-11-16 22:49:26,904 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-2.i [2024-11-16 22:49:26,920 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 22:49:26,920 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 22:49:27,021 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 22:49:27,030 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;@346e2d80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 22:49:27,030 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 22:49:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 432 states have (on average 1.6157407407407407) internal successors, (698), 434 states have internal predecessors, (698), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 22:49:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 22:49:27,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:27,045 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:27,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:27,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash -326944247, now seen corresponding path program 1 times [2024-11-16 22:49:27,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:27,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036807695] [2024-11-16 22:49:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:27,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:49:27,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:27,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036807695] [2024-11-16 22:49:27,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036807695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:27,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:27,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 22:49:27,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906806741] [2024-11-16 22:49:27,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:27,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 22:49:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:27,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 22:49:27,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:49:27,303 INFO L87 Difference]: Start difference. First operand has 441 states, 432 states have (on average 1.6157407407407407) internal successors, (698), 434 states have internal predecessors, (698), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:49:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:27,462 INFO L93 Difference]: Finished difference Result 879 states and 1414 transitions. [2024-11-16 22:49:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 22:49:27,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 22:49:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:27,475 INFO L225 Difference]: With dead ends: 879 [2024-11-16 22:49:27,475 INFO L226 Difference]: Without dead ends: 402 [2024-11-16 22:49:27,479 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 [2024-11-16 22:49:27,482 INFO L432 NwaCegarLoop]: 588 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:27,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 588 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:49:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-16 22:49:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-11-16 22:49:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 394 states have (on average 1.4416243654822336) internal successors, (568), 395 states have internal predecessors, (568), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 22:49:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 578 transitions. [2024-11-16 22:49:27,540 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 578 transitions. Word has length 13 [2024-11-16 22:49:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:27,540 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 578 transitions. [2024-11-16 22:49:27,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:49:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 578 transitions. [2024-11-16 22:49:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 22:49:27,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:27,542 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:27,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 22:49:27,542 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:27,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:27,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1295995116, now seen corresponding path program 1 times [2024-11-16 22:49:27,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470936152] [2024-11-16 22:49:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:49:27,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470936152] [2024-11-16 22:49:27,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470936152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:27,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:27,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:49:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616024709] [2024-11-16 22:49:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:27,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:49:27,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:49:27,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:49:27,821 INFO L87 Difference]: Start difference. First operand 402 states and 578 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:49:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:28,257 INFO L93 Difference]: Finished difference Result 1100 states and 1600 transitions. [2024-11-16 22:49:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:49:28,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-16 22:49:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:28,262 INFO L225 Difference]: With dead ends: 1100 [2024-11-16 22:49:28,263 INFO L226 Difference]: Without dead ends: 698 [2024-11-16 22:49:28,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:49:28,265 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 434 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:28,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1528 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:49:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-16 22:49:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 697. [2024-11-16 22:49:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 688 states have (on average 1.4622093023255813) internal successors, (1006), 690 states have internal predecessors, (1006), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:49:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1018 transitions. [2024-11-16 22:49:28,312 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1018 transitions. Word has length 15 [2024-11-16 22:49:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:28,312 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1018 transitions. [2024-11-16 22:49:28,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:49:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1018 transitions. [2024-11-16 22:49:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 22:49:28,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:28,315 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] [2024-11-16 22:49:28,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 22:49:28,316 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:28,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -363642974, now seen corresponding path program 1 times [2024-11-16 22:49:28,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:28,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122149453] [2024-11-16 22:49:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:28,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:49:28,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:28,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122149453] [2024-11-16 22:49:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122149453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:28,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:28,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:49:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024669254] [2024-11-16 22:49:28,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:28,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:49:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:49:28,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:49:28,614 INFO L87 Difference]: Start difference. First operand 697 states and 1018 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:49:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:28,788 INFO L93 Difference]: Finished difference Result 972 states and 1411 transitions. [2024-11-16 22:49:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:49:28,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 22:49:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:28,794 INFO L225 Difference]: With dead ends: 972 [2024-11-16 22:49:28,794 INFO L226 Difference]: Without dead ends: 613 [2024-11-16 22:49:28,795 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 [2024-11-16 22:49:28,797 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 30 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:28,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1309 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:49:28,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-16 22:49:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2024-11-16 22:49:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 604 states have (on average 1.4105960264900663) internal successors, (852), 606 states have internal predecessors, (852), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:49:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 864 transitions. [2024-11-16 22:49:28,829 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 864 transitions. Word has length 69 [2024-11-16 22:49:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:28,829 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 864 transitions. [2024-11-16 22:49:28,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:49:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 864 transitions. [2024-11-16 22:49:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 22:49:28,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:28,833 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] [2024-11-16 22:49:28,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 22:49:28,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:28,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash -648850007, now seen corresponding path program 1 times [2024-11-16 22:49:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:28,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961069007] [2024-11-16 22:49:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:28,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:49:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961069007] [2024-11-16 22:49:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961069007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:29,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:29,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 22:49:29,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220928343] [2024-11-16 22:49:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:29,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:49:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:49:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:49:29,315 INFO L87 Difference]: Start difference. First operand 613 states and 864 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:49:29,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:29,652 INFO L93 Difference]: Finished difference Result 1134 states and 1567 transitions. [2024-11-16 22:49:29,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:49:29,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 22:49:29,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:29,657 INFO L225 Difference]: With dead ends: 1134 [2024-11-16 22:49:29,657 INFO L226 Difference]: Without dead ends: 856 [2024-11-16 22:49:29,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-16 22:49:29,663 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 469 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:29,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 2654 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:49:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2024-11-16 22:49:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 612. [2024-11-16 22:49:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 603 states have (on average 1.4096185737976783) internal successors, (850), 605 states have internal predecessors, (850), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:49:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 862 transitions. [2024-11-16 22:49:29,691 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 862 transitions. Word has length 69 [2024-11-16 22:49:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:29,692 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 862 transitions. [2024-11-16 22:49:29,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:49:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 862 transitions. [2024-11-16 22:49:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 22:49:29,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:29,696 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:29,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 22:49:29,697 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:29,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1161588862, now seen corresponding path program 1 times [2024-11-16 22:49:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:29,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319571960] [2024-11-16 22:49:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:29,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:29,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:49:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:29,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:49:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:49:29,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:29,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319571960] [2024-11-16 22:49:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319571960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:29,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:29,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:49:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690668407] [2024-11-16 22:49:30,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:30,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:49:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:30,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:49:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:49:30,003 INFO L87 Difference]: Start difference. First operand 612 states and 862 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:30,351 INFO L93 Difference]: Finished difference Result 1171 states and 1645 transitions. [2024-11-16 22:49:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:49:30,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-11-16 22:49:30,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:30,357 INFO L225 Difference]: With dead ends: 1171 [2024-11-16 22:49:30,357 INFO L226 Difference]: Without dead ends: 621 [2024-11-16 22:49:30,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:49:30,359 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 113 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:30,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1546 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:49:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-11-16 22:49:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 612. [2024-11-16 22:49:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 603 states have (on average 1.386401326699834) internal successors, (836), 605 states have internal predecessors, (836), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:49:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 848 transitions. [2024-11-16 22:49:30,377 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 848 transitions. Word has length 107 [2024-11-16 22:49:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:30,378 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 848 transitions. [2024-11-16 22:49:30,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 848 transitions. [2024-11-16 22:49:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 22:49:30,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:30,380 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:30,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 22:49:30,380 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:30,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash -532131941, now seen corresponding path program 1 times [2024-11-16 22:49:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229434852] [2024-11-16 22:49:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:30,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:49:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:31,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:49:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:49:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229434852] [2024-11-16 22:49:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229434852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:49:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779738004] [2024-11-16 22:49:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:31,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:49:31,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:49:31,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:49:31,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 22:49:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:31,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 22:49:31,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:49:31,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 22:49:31,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-16 22:49:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:49:32,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:49:32,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779738004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:32,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:49:32,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2024-11-16 22:49:32,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461303131] [2024-11-16 22:49:32,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:32,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 22:49:32,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:32,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 22:49:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-16 22:49:32,568 INFO L87 Difference]: Start difference. First operand 612 states and 848 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:35,184 INFO L93 Difference]: Finished difference Result 1430 states and 1967 transitions. [2024-11-16 22:49:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 22:49:35,185 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-11-16 22:49:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:35,189 INFO L225 Difference]: With dead ends: 1430 [2024-11-16 22:49:35,189 INFO L226 Difference]: Without dead ends: 906 [2024-11-16 22:49:35,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-16 22:49:35,191 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 740 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:35,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 2953 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 22:49:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-11-16 22:49:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 639. [2024-11-16 22:49:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 630 states have (on average 1.3777777777777778) internal successors, (868), 632 states have internal predecessors, (868), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:49:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 880 transitions. [2024-11-16 22:49:35,212 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 880 transitions. Word has length 107 [2024-11-16 22:49:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:35,212 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 880 transitions. [2024-11-16 22:49:35,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 880 transitions. [2024-11-16 22:49:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-16 22:49:35,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:35,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:35,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 22:49:35,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 22:49:35,419 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:35,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:35,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2114603153, now seen corresponding path program 1 times [2024-11-16 22:49:35,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:35,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570811] [2024-11-16 22:49:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:35,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 22:49:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:35,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 22:49:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:49:35,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:35,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570811] [2024-11-16 22:49:35,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:49:35,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449132179] [2024-11-16 22:49:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:35,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:49:35,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:49:35,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:49:35,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 22:49:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:36,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 22:49:36,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:49:36,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 22:49:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:49:36,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:49:36,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449132179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:36,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:49:36,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-16 22:49:36,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556693091] [2024-11-16 22:49:36,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:36,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:49:36,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:36,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:49:36,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:49:36,522 INFO L87 Difference]: Start difference. First operand 639 states and 880 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:36,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:36,704 INFO L93 Difference]: Finished difference Result 826 states and 1132 transitions. [2024-11-16 22:49:36,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:49:36,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2024-11-16 22:49:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:36,710 INFO L225 Difference]: With dead ends: 826 [2024-11-16 22:49:36,710 INFO L226 Difference]: Without dead ends: 815 [2024-11-16 22:49:36,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-16 22:49:36,711 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 750 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:36,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1299 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:49:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-16 22:49:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 641. [2024-11-16 22:49:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 632 states have (on average 1.3765822784810127) internal successors, (870), 634 states have internal predecessors, (870), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:49:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 882 transitions. [2024-11-16 22:49:36,765 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 882 transitions. Word has length 108 [2024-11-16 22:49:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:36,766 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 882 transitions. [2024-11-16 22:49:36,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 882 transitions. [2024-11-16 22:49:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-16 22:49:36,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:36,769 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:36,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 22:49:36,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-16 22:49:36,976 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:36,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:36,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1345978254, now seen corresponding path program 1 times [2024-11-16 22:49:36,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:36,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064727224] [2024-11-16 22:49:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:36,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:37,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 22:49:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:37,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 22:49:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:49:37,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:37,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064727224] [2024-11-16 22:49:37,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064727224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:37,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:37,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:49:37,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979964746] [2024-11-16 22:49:37,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:37,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:49:37,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:37,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:49:37,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:49:37,231 INFO L87 Difference]: Start difference. First operand 641 states and 882 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:37,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:37,734 INFO L93 Difference]: Finished difference Result 1275 states and 1751 transitions. [2024-11-16 22:49:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:49:37,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 162 [2024-11-16 22:49:37,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:37,739 INFO L225 Difference]: With dead ends: 1275 [2024-11-16 22:49:37,739 INFO L226 Difference]: Without dead ends: 796 [2024-11-16 22:49:37,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:49:37,741 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 975 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:37,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1465 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:49:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2024-11-16 22:49:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 783. [2024-11-16 22:49:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 773 states have (on average 1.3725743855109962) internal successors, (1061), 776 states have internal predecessors, (1061), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:49:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1075 transitions. [2024-11-16 22:49:37,767 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1075 transitions. Word has length 162 [2024-11-16 22:49:37,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:37,768 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1075 transitions. [2024-11-16 22:49:37,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1075 transitions. [2024-11-16 22:49:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-16 22:49:37,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:37,770 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:37,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 22:49:37,771 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:37,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash 211120625, now seen corresponding path program 1 times [2024-11-16 22:49:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:37,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110555740] [2024-11-16 22:49:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:38,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 22:49:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:38,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 22:49:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:49:38,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:38,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110555740] [2024-11-16 22:49:38,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110555740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:49:38,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792157108] [2024-11-16 22:49:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:38,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:49:38,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:49:38,358 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:49:38,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 22:49:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:38,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 22:49:38,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:49:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:49:38,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:49:38,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792157108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:38,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:49:38,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 22:49:38,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127895676] [2024-11-16 22:49:38,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:38,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:49:38,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:38,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:49:38,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:49:38,837 INFO L87 Difference]: Start difference. First operand 783 states and 1075 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:39,086 INFO L93 Difference]: Finished difference Result 1496 states and 2056 transitions. [2024-11-16 22:49:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:49:39,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-16 22:49:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:39,091 INFO L225 Difference]: With dead ends: 1496 [2024-11-16 22:49:39,091 INFO L226 Difference]: Without dead ends: 828 [2024-11-16 22:49:39,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:49:39,093 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 17 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:39,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1175 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:49:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-16 22:49:39,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 812. [2024-11-16 22:49:39,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 802 states have (on average 1.366583541147132) internal successors, (1096), 805 states have internal predecessors, (1096), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:49:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1110 transitions. [2024-11-16 22:49:39,123 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1110 transitions. Word has length 173 [2024-11-16 22:49:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:39,123 INFO L471 AbstractCegarLoop]: Abstraction has 812 states and 1110 transitions. [2024-11-16 22:49:39,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:39,124 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1110 transitions. [2024-11-16 22:49:39,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-16 22:49:39,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:39,126 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:39,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 22:49:39,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:49:39,331 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:39,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:39,331 INFO L85 PathProgramCache]: Analyzing trace with hash -634137532, now seen corresponding path program 1 times [2024-11-16 22:49:39,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:39,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041836235] [2024-11-16 22:49:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:39,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:39,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 22:49:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:39,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 22:49:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:49:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041836235] [2024-11-16 22:49:39,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041836235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:39,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:39,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 22:49:39,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123945957] [2024-11-16 22:49:39,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:39,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:49:39,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:49:39,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:49:39,833 INFO L87 Difference]: Start difference. First operand 812 states and 1110 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:40,570 INFO L93 Difference]: Finished difference Result 1520 states and 2083 transitions. [2024-11-16 22:49:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:49:40,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-16 22:49:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:40,575 INFO L225 Difference]: With dead ends: 1520 [2024-11-16 22:49:40,575 INFO L226 Difference]: Without dead ends: 827 [2024-11-16 22:49:40,576 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 [2024-11-16 22:49:40,577 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 16 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:40,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2083 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 22:49:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-16 22:49:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 820. [2024-11-16 22:49:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 810 states have (on average 1.365432098765432) internal successors, (1106), 813 states have internal predecessors, (1106), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:49:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1120 transitions. [2024-11-16 22:49:40,608 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1120 transitions. Word has length 174 [2024-11-16 22:49:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:40,609 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1120 transitions. [2024-11-16 22:49:40,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1120 transitions. [2024-11-16 22:49:40,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-16 22:49:40,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:40,612 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:40,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 22:49:40,612 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:40,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1229002739, now seen corresponding path program 1 times [2024-11-16 22:49:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891932810] [2024-11-16 22:49:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:40,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:41,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:49:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:41,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:49:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:49:41,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891932810] [2024-11-16 22:49:41,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891932810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:41,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:41,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 22:49:41,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410276549] [2024-11-16 22:49:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:41,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 22:49:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 22:49:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:49:41,020 INFO L87 Difference]: Start difference. First operand 820 states and 1120 transitions. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:41,883 INFO L93 Difference]: Finished difference Result 1535 states and 2103 transitions. [2024-11-16 22:49:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 22:49:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-16 22:49:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:41,888 INFO L225 Difference]: With dead ends: 1535 [2024-11-16 22:49:41,889 INFO L226 Difference]: Without dead ends: 845 [2024-11-16 22:49:41,890 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 [2024-11-16 22:49:41,891 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 20 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:41,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2390 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 22:49:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-16 22:49:41,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 836. [2024-11-16 22:49:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 826 states have (on average 1.3656174334140436) internal successors, (1128), 829 states have internal predecessors, (1128), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:49:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1142 transitions. [2024-11-16 22:49:41,920 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1142 transitions. Word has length 175 [2024-11-16 22:49:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:41,920 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1142 transitions. [2024-11-16 22:49:41,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1142 transitions. [2024-11-16 22:49:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-16 22:49:41,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:41,923 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:41,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 22:49:41,923 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:41,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:41,924 INFO L85 PathProgramCache]: Analyzing trace with hash -928040875, now seen corresponding path program 1 times [2024-11-16 22:49:41,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:41,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077811227] [2024-11-16 22:49:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:41,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:42,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:49:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:42,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:49:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:49:42,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077811227] [2024-11-16 22:49:42,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077811227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:49:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369904924] [2024-11-16 22:49:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:42,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:49:42,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:49:42,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:49:42,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 22:49:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:42,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 22:49:42,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:49:42,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 22:49:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 22:49:43,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:49:43,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369904924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:43,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:49:43,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-16 22:49:43,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442060901] [2024-11-16 22:49:43,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:43,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 22:49:43,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:43,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 22:49:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-16 22:49:43,407 INFO L87 Difference]: Start difference. First operand 836 states and 1142 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:44,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:44,373 INFO L93 Difference]: Finished difference Result 1488 states and 2017 transitions. [2024-11-16 22:49:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 22:49:44,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-16 22:49:44,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:44,379 INFO L225 Difference]: With dead ends: 1488 [2024-11-16 22:49:44,379 INFO L226 Difference]: Without dead ends: 1071 [2024-11-16 22:49:44,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-16 22:49:44,381 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 474 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:44,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 3035 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 22:49:44,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-16 22:49:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 872. [2024-11-16 22:49:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 862 states have (on average 1.3549883990719258) internal successors, (1168), 865 states have internal predecessors, (1168), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:49:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1182 transitions. [2024-11-16 22:49:44,412 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1182 transitions. Word has length 175 [2024-11-16 22:49:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:44,412 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1182 transitions. [2024-11-16 22:49:44,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:44,413 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1182 transitions. [2024-11-16 22:49:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 22:49:44,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:44,415 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:44,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 22:49:44,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:49:44,620 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:44,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash -620371295, now seen corresponding path program 1 times [2024-11-16 22:49:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:44,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073612156] [2024-11-16 22:49:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:44,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:45,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:49:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:45,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:49:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:49:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:45,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073612156] [2024-11-16 22:49:45,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073612156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:49:45,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794598253] [2024-11-16 22:49:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:45,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:49:45,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:49:45,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:49:45,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 22:49:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:45,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 22:49:45,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:49:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 22:49:45,613 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:49:45,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794598253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:45,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:49:45,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-16 22:49:45,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325355012] [2024-11-16 22:49:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:45,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 22:49:45,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 22:49:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 22:49:45,616 INFO L87 Difference]: Start difference. First operand 872 states and 1182 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:45,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:45,977 INFO L93 Difference]: Finished difference Result 1295 states and 1755 transitions. [2024-11-16 22:49:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:49:45,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-16 22:49:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:45,982 INFO L225 Difference]: With dead ends: 1295 [2024-11-16 22:49:45,982 INFO L226 Difference]: Without dead ends: 878 [2024-11-16 22:49:45,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 22:49:45,983 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 34 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:45,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1907 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:49:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2024-11-16 22:49:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 872. [2024-11-16 22:49:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 862 states have (on average 1.351508120649652) internal successors, (1165), 865 states have internal predecessors, (1165), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:49:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1179 transitions. [2024-11-16 22:49:46,013 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1179 transitions. Word has length 176 [2024-11-16 22:49:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:46,013 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1179 transitions. [2024-11-16 22:49:46,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1179 transitions. [2024-11-16 22:49:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-16 22:49:46,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:46,016 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:46,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 22:49:46,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 22:49:46,220 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:46,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1928142296, now seen corresponding path program 1 times [2024-11-16 22:49:46,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755734235] [2024-11-16 22:49:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:46,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:46,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:49:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:46,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:49:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 22:49:46,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:46,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755734235] [2024-11-16 22:49:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755734235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:46,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 22:49:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145537846] [2024-11-16 22:49:46,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:46,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:49:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:49:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:49:46,630 INFO L87 Difference]: Start difference. First operand 872 states and 1179 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:47,130 INFO L93 Difference]: Finished difference Result 1301 states and 1762 transitions. [2024-11-16 22:49:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:49:47,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-16 22:49:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:47,134 INFO L225 Difference]: With dead ends: 1301 [2024-11-16 22:49:47,135 INFO L226 Difference]: Without dead ends: 884 [2024-11-16 22:49:47,136 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 [2024-11-16 22:49:47,136 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 16 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:47,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1935 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:49:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-11-16 22:49:47,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 881. [2024-11-16 22:49:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 871 states have (on average 1.3478760045924225) internal successors, (1174), 874 states have internal predecessors, (1174), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:49:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1188 transitions. [2024-11-16 22:49:47,167 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1188 transitions. Word has length 177 [2024-11-16 22:49:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:47,167 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1188 transitions. [2024-11-16 22:49:47,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:47,168 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1188 transitions. [2024-11-16 22:49:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-16 22:49:47,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:47,170 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:47,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 22:49:47,170 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:47,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash -557456315, now seen corresponding path program 1 times [2024-11-16 22:49:47,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:47,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32929179] [2024-11-16 22:49:47,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:47,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:47,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:49:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:47,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:49:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 22:49:47,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:47,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32929179] [2024-11-16 22:49:47,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32929179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:47,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:49:47,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 22:49:47,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149254797] [2024-11-16 22:49:47,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:47,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 22:49:47,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 22:49:47,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:49:47,578 INFO L87 Difference]: Start difference. First operand 881 states and 1188 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:49:48,174 INFO L93 Difference]: Finished difference Result 1325 states and 1789 transitions. [2024-11-16 22:49:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 22:49:48,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-11-16 22:49:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:49:48,178 INFO L225 Difference]: With dead ends: 1325 [2024-11-16 22:49:48,178 INFO L226 Difference]: Without dead ends: 899 [2024-11-16 22:49:48,179 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 [2024-11-16 22:49:48,180 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 20 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:49:48,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2641 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:49:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2024-11-16 22:49:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 893. [2024-11-16 22:49:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 883 states have (on average 1.3465458663646659) internal successors, (1189), 886 states have internal predecessors, (1189), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:49:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1203 transitions. [2024-11-16 22:49:48,210 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1203 transitions. Word has length 178 [2024-11-16 22:49:48,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:49:48,210 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1203 transitions. [2024-11-16 22:49:48,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1203 transitions. [2024-11-16 22:49:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-16 22:49:48,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:49:48,213 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:49:48,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 22:49:48,213 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:49:48,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:49:48,214 INFO L85 PathProgramCache]: Analyzing trace with hash -849640288, now seen corresponding path program 1 times [2024-11-16 22:49:48,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:49:48,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945499384] [2024-11-16 22:49:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:48,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:49:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:48,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:49:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:48,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:49:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:49:48,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:49:48,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945499384] [2024-11-16 22:49:48,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945499384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:49:48,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518470907] [2024-11-16 22:49:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:49:48,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:49:48,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:49:48,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:49:48,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 22:49:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:49:49,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 22:49:49,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:49:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:49:56,724 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:49:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518470907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:49:56,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:49:56,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-16 22:49:56,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680787623] [2024-11-16 22:49:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:49:56,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:49:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:49:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:49:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-16 22:49:56,727 INFO L87 Difference]: Start difference. First operand 893 states and 1203 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:49:58,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-16 22:50:01,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:01,115 INFO L93 Difference]: Finished difference Result 1662 states and 2240 transitions. [2024-11-16 22:50:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:50:01,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-11-16 22:50:01,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:01,120 INFO L225 Difference]: With dead ends: 1662 [2024-11-16 22:50:01,120 INFO L226 Difference]: Without dead ends: 907 [2024-11-16 22:50:01,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-16 22:50:01,122 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 12 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:50:01,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2081 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-16 22:50:01,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2024-11-16 22:50:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 893. [2024-11-16 22:50:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 883 states have (on average 1.3465458663646659) internal successors, (1189), 886 states have internal predecessors, (1189), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:50:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1203 transitions. [2024-11-16 22:50:01,160 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1203 transitions. Word has length 178 [2024-11-16 22:50:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:01,160 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1203 transitions. [2024-11-16 22:50:01,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:50:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1203 transitions. [2024-11-16 22:50:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 22:50:01,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:01,164 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:50:01,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 22:50:01,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 22:50:01,365 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:01,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1297205688, now seen corresponding path program 1 times [2024-11-16 22:50:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:01,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264412332] [2024-11-16 22:50:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:01,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 22:50:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:01,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 22:50:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:50:01,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:01,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264412332] [2024-11-16 22:50:01,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264412332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:01,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:01,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 22:50:01,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767730860] [2024-11-16 22:50:01,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:01,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 22:50:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 22:50:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 22:50:01,834 INFO L87 Difference]: Start difference. First operand 893 states and 1203 transitions. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:50:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:02,681 INFO L93 Difference]: Finished difference Result 1672 states and 2252 transitions. [2024-11-16 22:50:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 22:50:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 179 [2024-11-16 22:50:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:02,686 INFO L225 Difference]: With dead ends: 1672 [2024-11-16 22:50:02,686 INFO L226 Difference]: Without dead ends: 922 [2024-11-16 22:50:02,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 22:50:02,688 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 28 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 22:50:02,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3132 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 22:50:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-16 22:50:02,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 907. [2024-11-16 22:50:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 897 states have (on average 1.3455964325529544) internal successors, (1207), 900 states have internal predecessors, (1207), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:50:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1221 transitions. [2024-11-16 22:50:02,714 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1221 transitions. Word has length 179 [2024-11-16 22:50:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:02,715 INFO L471 AbstractCegarLoop]: Abstraction has 907 states and 1221 transitions. [2024-11-16 22:50:02,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:50:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1221 transitions. [2024-11-16 22:50:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 22:50:02,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:02,717 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:50:02,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 22:50:02,717 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:02,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1385215488, now seen corresponding path program 1 times [2024-11-16 22:50:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:02,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000820157] [2024-11-16 22:50:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:02,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:03,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 22:50:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:03,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 22:50:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:50:03,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:03,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000820157] [2024-11-16 22:50:03,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000820157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:50:03,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32843799] [2024-11-16 22:50:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:03,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:50:03,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:50:03,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:50:03,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 22:50:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:03,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 22:50:03,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:50:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:50:03,696 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:50:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32843799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:03,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:50:03,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-16 22:50:03,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855977526] [2024-11-16 22:50:03,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:03,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:50:03,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:50:03,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-16 22:50:03,698 INFO L87 Difference]: Start difference. First operand 907 states and 1221 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:50:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:04,193 INFO L93 Difference]: Finished difference Result 1688 states and 2275 transitions. [2024-11-16 22:50:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:50:04,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 179 [2024-11-16 22:50:04,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:04,198 INFO L225 Difference]: With dead ends: 1688 [2024-11-16 22:50:04,198 INFO L226 Difference]: Without dead ends: 931 [2024-11-16 22:50:04,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-16 22:50:04,200 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 17 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:50:04,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2104 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:50:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-11-16 22:50:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 921. [2024-11-16 22:50:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 911 states have (on average 1.3468715697036224) internal successors, (1227), 914 states have internal predecessors, (1227), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:50:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1241 transitions. [2024-11-16 22:50:04,225 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1241 transitions. Word has length 179 [2024-11-16 22:50:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:04,225 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1241 transitions. [2024-11-16 22:50:04,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:50:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1241 transitions. [2024-11-16 22:50:04,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 22:50:04,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:04,229 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:50:04,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 22:50:04,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:50:04,434 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:04,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1641820719, now seen corresponding path program 1 times [2024-11-16 22:50:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:04,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586686934] [2024-11-16 22:50:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:04,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:04,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 22:50:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:04,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 22:50:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:50:04,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:04,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586686934] [2024-11-16 22:50:04,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586686934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:04,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:50:04,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 22:50:04,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605859253] [2024-11-16 22:50:04,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:04,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 22:50:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 22:50:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-16 22:50:04,957 INFO L87 Difference]: Start difference. First operand 921 states and 1241 transitions. Second operand has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:50:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:05,838 INFO L93 Difference]: Finished difference Result 1711 states and 2307 transitions. [2024-11-16 22:50:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 22:50:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 180 [2024-11-16 22:50:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:05,842 INFO L225 Difference]: With dead ends: 1711 [2024-11-16 22:50:05,842 INFO L226 Difference]: Without dead ends: 942 [2024-11-16 22:50:05,844 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 [2024-11-16 22:50:05,844 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 34 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 22:50:05,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2798 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 22:50:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-16 22:50:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 927. [2024-11-16 22:50:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 917 states have (on average 1.3446019629225736) internal successors, (1233), 920 states have internal predecessors, (1233), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:50:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1247 transitions. [2024-11-16 22:50:05,871 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1247 transitions. Word has length 180 [2024-11-16 22:50:05,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:05,872 INFO L471 AbstractCegarLoop]: Abstraction has 927 states and 1247 transitions. [2024-11-16 22:50:05,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:50:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1247 transitions. [2024-11-16 22:50:05,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 22:50:05,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:05,874 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:50:05,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 22:50:05,875 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:05,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:05,875 INFO L85 PathProgramCache]: Analyzing trace with hash 75157223, now seen corresponding path program 1 times [2024-11-16 22:50:05,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:05,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566516788] [2024-11-16 22:50:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:05,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:06,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 22:50:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:06,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 22:50:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:50:06,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566516788] [2024-11-16 22:50:06,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566516788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:50:06,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361927959] [2024-11-16 22:50:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:06,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:50:06,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:50:06,210 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:50:06,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 22:50:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:06,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 22:50:06,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:50:06,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 22:50:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:50:07,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:50:07,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361927959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:50:07,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:50:07,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2024-11-16 22:50:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712951219] [2024-11-16 22:50:07,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:50:07,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 22:50:07,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:50:07,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 22:50:07,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:50:07,006 INFO L87 Difference]: Start difference. First operand 927 states and 1247 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 22:50:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:50:07,195 INFO L93 Difference]: Finished difference Result 1716 states and 2304 transitions. [2024-11-16 22:50:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:50:07,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 180 [2024-11-16 22:50:07,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:50:07,200 INFO L225 Difference]: With dead ends: 1716 [2024-11-16 22:50:07,200 INFO L226 Difference]: Without dead ends: 984 [2024-11-16 22:50:07,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 22:50:07,202 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 267 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:50:07,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2198 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:50:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-16 22:50:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 930. [2024-11-16 22:50:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 919 states have (on average 1.3449401523394995) internal successors, (1236), 923 states have internal predecessors, (1236), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-16 22:50:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1251 transitions. [2024-11-16 22:50:07,236 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1251 transitions. Word has length 180 [2024-11-16 22:50:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:50:07,236 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1251 transitions. [2024-11-16 22:50:07,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 22:50:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1251 transitions. [2024-11-16 22:50:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-16 22:50:07,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:50:07,239 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:50:07,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 22:50:07,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:50:07,440 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:50:07,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:50:07,440 INFO L85 PathProgramCache]: Analyzing trace with hash 506284451, now seen corresponding path program 1 times [2024-11-16 22:50:07,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:50:07,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777102734] [2024-11-16 22:50:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:07,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:50:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:07,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 22:50:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:07,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 22:50:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 22:50:07,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:50:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777102734] [2024-11-16 22:50:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777102734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:50:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437225025] [2024-11-16 22:50:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:50:07,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:50:07,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:50:07,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:50:07,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 22:50:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:50:08,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-16 22:50:08,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:50:08,806 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 11 treesize of output 7 [2024-11-16 22:50:08,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-16 22:50:08,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-16 22:50:09,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 22:50:09,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 22:50:09,325 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-16 22:50:09,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-16 22:50:09,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 22:50:09,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-16 22:50:09,496 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-16 22:50:09,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-16 22:50:09,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-11-16 22:50:11,786 INFO L190 IndexEqualityManager]: detected not equals via solver