./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:42:15,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:42:15,077 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:42:15,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:42:15,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:42:15,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:42:15,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:42:15,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:42:15,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:42:15,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:42:15,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:42:15,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:42:15,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:42:15,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:42:15,126 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:42:15,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:42:15,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:42:15,126 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:42:15,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:42:15,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:42:15,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:42:15,129 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:42:15,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:42:15,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:42:15,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:42:15,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:42:15,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:42:15,130 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:42:15,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:42:15,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:42:15,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:42:15,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:42:15,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:42:15,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:42:15,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:42:15,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:42:15,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:42:15,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:42:15,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:42:15,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:42:15,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:42:15,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:42:15,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2024-10-24 14:42:15,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:42:15,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:42:15,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:42:15,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:42:15,457 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:42:15,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2024-10-24 14:42:16,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:42:17,230 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:42:17,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2024-10-24 14:42:17,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed70af873/4c47e824e7514957a2b43d91fc93494b/FLAGe4f525578 [2024-10-24 14:42:17,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed70af873/4c47e824e7514957a2b43d91fc93494b [2024-10-24 14:42:17,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:42:17,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:42:17,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:42:17,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:42:17,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:42:17,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:42:17" (1/1) ... [2024-10-24 14:42:17,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9a97c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:17, skipping insertion in model container [2024-10-24 14:42:17,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:42:17" (1/1) ... [2024-10-24 14:42:17,546 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:42:18,058 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2024-10-24 14:42:18,071 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2024-10-24 14:42:18,181 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2024-10-24 14:42:18,182 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2024-10-24 14:42:18,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:42:18,208 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:42:18,269 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2024-10-24 14:42:18,273 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2024-10-24 14:42:18,320 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2024-10-24 14:42:18,321 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2024-10-24 14:42:18,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:42:18,395 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:42:18,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18 WrapperNode [2024-10-24 14:42:18,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:42:18,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:42:18,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:42:18,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:42:18,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,525 INFO L138 Inliner]: procedures = 282, calls = 286, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1468 [2024-10-24 14:42:18,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:42:18,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:42:18,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:42:18,527 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:42:18,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,644 INFO L175 MemorySlicer]: Split 259 memory accesses to 4 slices as follows [2, 3, 34, 220]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 55 writes are split as follows [0, 2, 4, 49]. [2024-10-24 14:42:18,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:42:18,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:42:18,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:42:18,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:42:18,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (1/1) ... [2024-10-24 14:42:18,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:42:18,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:42:18,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 14:42:18,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 14:42:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:42:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:42:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:42:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:42:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 14:42:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:42:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2024-10-24 14:42:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2024-10-24 14:42:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:42:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:42:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:42:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 14:42:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:42:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:42:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:42:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:42:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:42:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 14:42:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:42:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:42:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2024-10-24 14:42:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2024-10-24 14:42:18,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:42:18,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:42:18,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:42:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 14:42:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2024-10-24 14:42:18,861 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2024-10-24 14:42:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:42:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:42:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:42:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 14:42:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:42:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:42:19,118 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:42:19,120 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:42:20,403 INFO L? ?]: Removed 333 outVars from TransFormulas that were not future-live. [2024-10-24 14:42:20,403 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:42:20,460 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:42:20,464 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-24 14:42:20,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:42:20 BoogieIcfgContainer [2024-10-24 14:42:20,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:42:20,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:42:20,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:42:20,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:42:20,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:42:17" (1/3) ... [2024-10-24 14:42:20,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678ffd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:42:20, skipping insertion in model container [2024-10-24 14:42:20,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:18" (2/3) ... [2024-10-24 14:42:20,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678ffd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:42:20, skipping insertion in model container [2024-10-24 14:42:20,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:42:20" (3/3) ... [2024-10-24 14:42:20,476 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2024-10-24 14:42:20,492 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:42:20,493 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-24 14:42:20,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:42:20,590 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;@771320c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:42:20,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 14:42:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 402 states have (on average 1.6144278606965174) internal successors, (649), 406 states have internal predecessors, (649), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 14:42:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 14:42:20,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:20,604 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:42:20,604 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:20,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash 141968546, now seen corresponding path program 1 times [2024-10-24 14:42:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051841644] [2024-10-24 14:42:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:20,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051841644] [2024-10-24 14:42:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051841644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:42:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956031709] [2024-10-24 14:42:20,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:20,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:42:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:42:20,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:42:20,984 INFO L87 Difference]: Start difference. First operand has 424 states, 402 states have (on average 1.6144278606965174) internal successors, (649), 406 states have internal predecessors, (649), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:21,092 INFO L93 Difference]: Finished difference Result 845 states and 1360 transitions. [2024-10-24 14:42:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:42:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-24 14:42:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:21,109 INFO L225 Difference]: With dead ends: 845 [2024-10-24 14:42:21,110 INFO L226 Difference]: Without dead ends: 420 [2024-10-24 14:42:21,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:42:21,122 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:21,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 595 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:42:21,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-10-24 14:42:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2024-10-24 14:42:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 399 states have (on average 1.443609022556391) internal successors, (576), 404 states have internal predecessors, (576), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 601 transitions. [2024-10-24 14:42:21,205 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 601 transitions. Word has length 7 [2024-10-24 14:42:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:21,205 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 601 transitions. [2024-10-24 14:42:21,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 601 transitions. [2024-10-24 14:42:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:42:21,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:21,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:42:21,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:42:21,207 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:21,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:21,208 INFO L85 PathProgramCache]: Analyzing trace with hash 750725892, now seen corresponding path program 1 times [2024-10-24 14:42:21,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:21,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960110933] [2024-10-24 14:42:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:21,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:21,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960110933] [2024-10-24 14:42:21,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960110933] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:21,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:21,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:42:21,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847057547] [2024-10-24 14:42:21,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:21,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:42:21,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:21,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:42:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:42:21,430 INFO L87 Difference]: Start difference. First operand 420 states and 601 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:21,616 INFO L93 Difference]: Finished difference Result 1027 states and 1478 transitions. [2024-10-24 14:42:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:42:21,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-24 14:42:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:21,621 INFO L225 Difference]: With dead ends: 1027 [2024-10-24 14:42:21,622 INFO L226 Difference]: Without dead ends: 818 [2024-10-24 14:42:21,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:42:21,624 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 554 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:21,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1826 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:42:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-10-24 14:42:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 422. [2024-10-24 14:42:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 401 states have (on average 1.4413965087281795) internal successors, (578), 406 states have internal predecessors, (578), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 603 transitions. [2024-10-24 14:42:21,653 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 603 transitions. Word has length 9 [2024-10-24 14:42:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:21,654 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 603 transitions. [2024-10-24 14:42:21,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:21,654 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 603 transitions. [2024-10-24 14:42:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:42:21,656 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:21,657 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] [2024-10-24 14:42:21,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:42:21,657 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:21,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 992376086, now seen corresponding path program 1 times [2024-10-24 14:42:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368344082] [2024-10-24 14:42:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:21,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368344082] [2024-10-24 14:42:21,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368344082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:21,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:21,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:42:21,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769005886] [2024-10-24 14:42:21,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:21,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:42:21,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:42:21,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:42:21,971 INFO L87 Difference]: Start difference. First operand 422 states and 603 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:22,091 INFO L93 Difference]: Finished difference Result 844 states and 1206 transitions. [2024-10-24 14:42:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:42:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 14:42:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:22,095 INFO L225 Difference]: With dead ends: 844 [2024-10-24 14:42:22,095 INFO L226 Difference]: Without dead ends: 425 [2024-10-24 14:42:22,097 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 [2024-10-24 14:42:22,098 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 106 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:22,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1607 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:42:22,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-10-24 14:42:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-10-24 14:42:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 401 states have (on average 1.4239401496259352) internal successors, (571), 406 states have internal predecessors, (571), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 596 transitions. [2024-10-24 14:42:22,119 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 596 transitions. Word has length 64 [2024-10-24 14:42:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:22,120 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 596 transitions. [2024-10-24 14:42:22,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 596 transitions. [2024-10-24 14:42:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:42:22,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:22,125 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] [2024-10-24 14:42:22,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:42:22,125 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:22,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash 696880968, now seen corresponding path program 1 times [2024-10-24 14:42:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835768259] [2024-10-24 14:42:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:22,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835768259] [2024-10-24 14:42:22,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835768259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:22,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:22,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:42:22,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146982432] [2024-10-24 14:42:22,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:22,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:42:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:22,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:42:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:42:22,296 INFO L87 Difference]: Start difference. First operand 422 states and 596 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:22,390 INFO L93 Difference]: Finished difference Result 793 states and 1114 transitions. [2024-10-24 14:42:22,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:42:22,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 14:42:22,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:22,393 INFO L225 Difference]: With dead ends: 793 [2024-10-24 14:42:22,394 INFO L226 Difference]: Without dead ends: 374 [2024-10-24 14:42:22,395 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 [2024-10-24 14:42:22,396 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 9 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:22,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1456 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:42:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-10-24 14:42:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2024-10-24 14:42:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 353 states have (on average 1.3909348441926346) internal successors, (491), 358 states have internal predecessors, (491), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 516 transitions. [2024-10-24 14:42:22,413 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 516 transitions. Word has length 64 [2024-10-24 14:42:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:22,414 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 516 transitions. [2024-10-24 14:42:22,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 516 transitions. [2024-10-24 14:42:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:42:22,418 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:22,418 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] [2024-10-24 14:42:22,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:42:22,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:22,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2068688266, now seen corresponding path program 1 times [2024-10-24 14:42:22,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:22,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890831299] [2024-10-24 14:42:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:22,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:22,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:22,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890831299] [2024-10-24 14:42:22,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890831299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:22,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:22,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:42:22,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003409212] [2024-10-24 14:42:22,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:22,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:42:22,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:42:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:42:22,846 INFO L87 Difference]: Start difference. First operand 374 states and 516 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:23,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:23,234 INFO L93 Difference]: Finished difference Result 750 states and 1037 transitions. [2024-10-24 14:42:23,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:42:23,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 14:42:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:23,238 INFO L225 Difference]: With dead ends: 750 [2024-10-24 14:42:23,238 INFO L226 Difference]: Without dead ends: 379 [2024-10-24 14:42:23,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:42:23,240 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 10 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:23,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2171 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:42:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-24 14:42:23,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2024-10-24 14:42:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 355 states have (on average 1.388732394366197) internal successors, (493), 360 states have internal predecessors, (493), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 518 transitions. [2024-10-24 14:42:23,259 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 518 transitions. Word has length 64 [2024-10-24 14:42:23,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:23,260 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 518 transitions. [2024-10-24 14:42:23,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:23,260 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 518 transitions. [2024-10-24 14:42:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 14:42:23,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:23,261 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] [2024-10-24 14:42:23,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:42:23,263 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:23,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash -437125107, now seen corresponding path program 1 times [2024-10-24 14:42:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670404222] [2024-10-24 14:42:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:23,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:23,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670404222] [2024-10-24 14:42:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670404222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:23,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:23,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:42:23,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021215831] [2024-10-24 14:42:23,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:23,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:42:23,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:23,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:42:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:42:23,575 INFO L87 Difference]: Start difference. First operand 376 states and 518 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:23,721 INFO L93 Difference]: Finished difference Result 749 states and 1033 transitions. [2024-10-24 14:42:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:42:23,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 14:42:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:23,724 INFO L225 Difference]: With dead ends: 749 [2024-10-24 14:42:23,724 INFO L226 Difference]: Without dead ends: 376 [2024-10-24 14:42:23,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:42:23,727 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 13 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:23,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1368 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:42:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-10-24 14:42:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-10-24 14:42:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 355 states have (on average 1.3859154929577464) internal successors, (492), 360 states have internal predecessors, (492), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 517 transitions. [2024-10-24 14:42:23,741 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 517 transitions. Word has length 65 [2024-10-24 14:42:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:23,742 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 517 transitions. [2024-10-24 14:42:23,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 517 transitions. [2024-10-24 14:42:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 14:42:23,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:23,744 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] [2024-10-24 14:42:23,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:42:23,746 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:23,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:23,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2023236473, now seen corresponding path program 1 times [2024-10-24 14:42:23,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:23,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285631194] [2024-10-24 14:42:23,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:23,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:23,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:23,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285631194] [2024-10-24 14:42:23,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285631194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:23,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:23,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:42:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909644814] [2024-10-24 14:42:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:23,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:42:23,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:23,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:42:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:42:23,997 INFO L87 Difference]: Start difference. First operand 376 states and 517 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:24,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:24,331 INFO L93 Difference]: Finished difference Result 754 states and 1039 transitions. [2024-10-24 14:42:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:42:24,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 14:42:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:24,335 INFO L225 Difference]: With dead ends: 754 [2024-10-24 14:42:24,335 INFO L226 Difference]: Without dead ends: 381 [2024-10-24 14:42:24,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:42:24,337 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 10 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:24,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2605 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:42:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-10-24 14:42:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2024-10-24 14:42:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 359 states have (on average 1.384401114206128) internal successors, (497), 364 states have internal predecessors, (497), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 522 transitions. [2024-10-24 14:42:24,347 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 522 transitions. Word has length 65 [2024-10-24 14:42:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:24,348 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 522 transitions. [2024-10-24 14:42:24,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:24,348 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 522 transitions. [2024-10-24 14:42:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:42:24,349 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:24,349 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] [2024-10-24 14:42:24,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:42:24,350 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:24,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash 946071343, now seen corresponding path program 1 times [2024-10-24 14:42:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:24,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964948660] [2024-10-24 14:42:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:24,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:24,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:24,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964948660] [2024-10-24 14:42:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964948660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:24,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:24,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:42:24,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690816578] [2024-10-24 14:42:24,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:24,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:42:24,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:42:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:42:24,689 INFO L87 Difference]: Start difference. First operand 380 states and 522 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:24,925 INFO L93 Difference]: Finished difference Result 760 states and 1046 transitions. [2024-10-24 14:42:24,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:42:24,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 14:42:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:24,928 INFO L225 Difference]: With dead ends: 760 [2024-10-24 14:42:24,928 INFO L226 Difference]: Without dead ends: 383 [2024-10-24 14:42:24,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:42:24,929 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 4 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:24,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1788 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:42:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-10-24 14:42:24,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-10-24 14:42:24,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.3812154696132597) internal successors, (500), 367 states have internal predecessors, (500), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 525 transitions. [2024-10-24 14:42:24,941 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 525 transitions. Word has length 66 [2024-10-24 14:42:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:24,942 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 525 transitions. [2024-10-24 14:42:24,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 525 transitions. [2024-10-24 14:42:24,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:42:24,944 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:24,944 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] [2024-10-24 14:42:24,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 14:42:24,944 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:24,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1827898922, now seen corresponding path program 1 times [2024-10-24 14:42:24,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:24,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093938687] [2024-10-24 14:42:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:24,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:25,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:25,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093938687] [2024-10-24 14:42:25,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093938687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:25,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:25,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:42:25,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977343516] [2024-10-24 14:42:25,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:25,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:42:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:25,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:42:25,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:42:25,368 INFO L87 Difference]: Start difference. First operand 383 states and 525 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:25,860 INFO L93 Difference]: Finished difference Result 776 states and 1068 transitions. [2024-10-24 14:42:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 14:42:25,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 14:42:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:25,862 INFO L225 Difference]: With dead ends: 776 [2024-10-24 14:42:25,863 INFO L226 Difference]: Without dead ends: 396 [2024-10-24 14:42:25,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:42:25,864 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 30 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:25,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3520 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:42:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-10-24 14:42:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2024-10-24 14:42:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 372 states have (on average 1.381720430107527) internal successors, (514), 377 states have internal predecessors, (514), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 539 transitions. [2024-10-24 14:42:25,876 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 539 transitions. Word has length 66 [2024-10-24 14:42:25,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:25,877 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 539 transitions. [2024-10-24 14:42:25,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 539 transitions. [2024-10-24 14:42:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:42:25,878 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:25,878 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] [2024-10-24 14:42:25,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:42:25,880 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:25,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash -215227921, now seen corresponding path program 1 times [2024-10-24 14:42:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584469962] [2024-10-24 14:42:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:25,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:26,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:26,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584469962] [2024-10-24 14:42:26,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584469962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:26,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:26,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:42:26,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727898727] [2024-10-24 14:42:26,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:26,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:42:26,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:42:26,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:42:26,325 INFO L87 Difference]: Start difference. First operand 393 states and 539 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:26,751 INFO L93 Difference]: Finished difference Result 786 states and 1080 transitions. [2024-10-24 14:42:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:42:26,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 14:42:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:26,756 INFO L225 Difference]: With dead ends: 786 [2024-10-24 14:42:26,756 INFO L226 Difference]: Without dead ends: 396 [2024-10-24 14:42:26,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:42:26,757 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 23 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:26,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3083 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:42:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-10-24 14:42:26,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2024-10-24 14:42:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 375 states have (on average 1.3786666666666667) internal successors, (517), 380 states have internal predecessors, (517), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 542 transitions. [2024-10-24 14:42:26,770 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 542 transitions. Word has length 66 [2024-10-24 14:42:26,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:26,770 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 542 transitions. [2024-10-24 14:42:26,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:26,770 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 542 transitions. [2024-10-24 14:42:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:42:26,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:26,771 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] [2024-10-24 14:42:26,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 14:42:26,772 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:26,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1927888144, now seen corresponding path program 1 times [2024-10-24 14:42:26,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:26,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14470251] [2024-10-24 14:42:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:27,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14470251] [2024-10-24 14:42:27,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14470251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:27,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:27,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:42:27,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849604881] [2024-10-24 14:42:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:27,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:42:27,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:27,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:42:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:42:27,050 INFO L87 Difference]: Start difference. First operand 396 states and 542 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:27,691 INFO L93 Difference]: Finished difference Result 794 states and 1089 transitions. [2024-10-24 14:42:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:42:27,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-24 14:42:27,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:27,694 INFO L225 Difference]: With dead ends: 794 [2024-10-24 14:42:27,694 INFO L226 Difference]: Without dead ends: 401 [2024-10-24 14:42:27,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:42:27,698 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 9 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:27,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2611 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:42:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-10-24 14:42:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2024-10-24 14:42:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 375 states have (on average 1.3786666666666667) internal successors, (517), 380 states have internal predecessors, (517), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 542 transitions. [2024-10-24 14:42:27,712 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 542 transitions. Word has length 67 [2024-10-24 14:42:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:27,713 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 542 transitions. [2024-10-24 14:42:27,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:27,713 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 542 transitions. [2024-10-24 14:42:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:42:27,714 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:27,714 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] [2024-10-24 14:42:27,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 14:42:27,715 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:27,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1191157692, now seen corresponding path program 1 times [2024-10-24 14:42:27,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:27,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626001348] [2024-10-24 14:42:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:28,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626001348] [2024-10-24 14:42:28,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626001348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:28,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:28,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:42:28,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806752691] [2024-10-24 14:42:28,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:28,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:42:28,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:28,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:42:28,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:42:28,284 INFO L87 Difference]: Start difference. First operand 396 states and 542 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:29,159 INFO L93 Difference]: Finished difference Result 1144 states and 1578 transitions. [2024-10-24 14:42:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:42:29,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-24 14:42:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:29,164 INFO L225 Difference]: With dead ends: 1144 [2024-10-24 14:42:29,164 INFO L226 Difference]: Without dead ends: 751 [2024-10-24 14:42:29,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:42:29,166 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 598 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:29,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2935 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:42:29,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-10-24 14:42:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 427. [2024-10-24 14:42:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 406 states have (on average 1.3497536945812807) internal successors, (548), 411 states have internal predecessors, (548), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 573 transitions. [2024-10-24 14:42:29,181 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 573 transitions. Word has length 67 [2024-10-24 14:42:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:29,181 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 573 transitions. [2024-10-24 14:42:29,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 573 transitions. [2024-10-24 14:42:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 14:42:29,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:29,182 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] [2024-10-24 14:42:29,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 14:42:29,183 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:29,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1668996667, now seen corresponding path program 1 times [2024-10-24 14:42:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:29,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26484843] [2024-10-24 14:42:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26484843] [2024-10-24 14:42:29,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26484843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:29,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:42:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752341853] [2024-10-24 14:42:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:29,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:42:29,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:42:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:42:29,438 INFO L87 Difference]: Start difference. First operand 427 states and 573 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:29,791 INFO L93 Difference]: Finished difference Result 830 states and 1126 transitions. [2024-10-24 14:42:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 14:42:29,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-24 14:42:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:29,794 INFO L225 Difference]: With dead ends: 830 [2024-10-24 14:42:29,794 INFO L226 Difference]: Without dead ends: 437 [2024-10-24 14:42:29,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:42:29,795 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 16 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:29,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3105 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:42:29,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-10-24 14:42:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2024-10-24 14:42:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 409 states have (on average 1.3496332518337408) internal successors, (552), 414 states have internal predecessors, (552), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 577 transitions. [2024-10-24 14:42:29,812 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 577 transitions. Word has length 68 [2024-10-24 14:42:29,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:29,812 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 577 transitions. [2024-10-24 14:42:29,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 577 transitions. [2024-10-24 14:42:29,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 14:42:29,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:29,813 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] [2024-10-24 14:42:29,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 14:42:29,814 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:29,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:29,814 INFO L85 PathProgramCache]: Analyzing trace with hash -488729825, now seen corresponding path program 1 times [2024-10-24 14:42:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390562779] [2024-10-24 14:42:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:29,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390562779] [2024-10-24 14:42:30,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390562779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:30,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:30,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:42:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25827282] [2024-10-24 14:42:30,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:30,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:42:30,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:42:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:42:30,104 INFO L87 Difference]: Start difference. First operand 430 states and 577 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:30,585 INFO L93 Difference]: Finished difference Result 836 states and 1134 transitions. [2024-10-24 14:42:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:42:30,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-24 14:42:30,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:30,588 INFO L225 Difference]: With dead ends: 836 [2024-10-24 14:42:30,588 INFO L226 Difference]: Without dead ends: 440 [2024-10-24 14:42:30,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:42:30,589 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 26 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:30,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3456 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:42:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-10-24 14:42:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 430. [2024-10-24 14:42:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 409 states have (on average 1.3496332518337408) internal successors, (552), 414 states have internal predecessors, (552), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 577 transitions. [2024-10-24 14:42:30,602 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 577 transitions. Word has length 68 [2024-10-24 14:42:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:30,602 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 577 transitions. [2024-10-24 14:42:30,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 577 transitions. [2024-10-24 14:42:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:42:30,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:30,603 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] [2024-10-24 14:42:30,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 14:42:30,604 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:30,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash -29765440, now seen corresponding path program 1 times [2024-10-24 14:42:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910479912] [2024-10-24 14:42:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:30,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:30,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:30,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910479912] [2024-10-24 14:42:30,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910479912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:30,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:30,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:42:30,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511473872] [2024-10-24 14:42:30,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:30,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:42:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:42:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:42:30,907 INFO L87 Difference]: Start difference. First operand 430 states and 577 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:31,371 INFO L93 Difference]: Finished difference Result 842 states and 1143 transitions. [2024-10-24 14:42:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:42:31,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 14:42:31,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:31,374 INFO L225 Difference]: With dead ends: 842 [2024-10-24 14:42:31,374 INFO L226 Difference]: Without dead ends: 446 [2024-10-24 14:42:31,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:42:31,378 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 22 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:31,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3511 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:42:31,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-10-24 14:42:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440. [2024-10-24 14:42:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 419 states have (on average 1.3460620525059666) internal successors, (564), 424 states have internal predecessors, (564), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 589 transitions. [2024-10-24 14:42:31,395 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 589 transitions. Word has length 69 [2024-10-24 14:42:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:31,396 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 589 transitions. [2024-10-24 14:42:31,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 589 transitions. [2024-10-24 14:42:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:42:31,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:31,397 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] [2024-10-24 14:42:31,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 14:42:31,398 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:31,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:31,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1800190044, now seen corresponding path program 1 times [2024-10-24 14:42:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064127216] [2024-10-24 14:42:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:31,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:31,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:31,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064127216] [2024-10-24 14:42:31,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064127216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:31,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:31,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:42:31,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069097398] [2024-10-24 14:42:31,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:31,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:42:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:31,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:42:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:42:31,717 INFO L87 Difference]: Start difference. First operand 440 states and 589 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:32,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:32,217 INFO L93 Difference]: Finished difference Result 862 states and 1167 transitions. [2024-10-24 14:42:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:42:32,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 14:42:32,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:32,220 INFO L225 Difference]: With dead ends: 862 [2024-10-24 14:42:32,221 INFO L226 Difference]: Without dead ends: 456 [2024-10-24 14:42:32,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:42:32,223 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 13 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:32,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3919 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:42:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-10-24 14:42:32,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 443. [2024-10-24 14:42:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 422 states have (on average 1.3459715639810426) internal successors, (568), 427 states have internal predecessors, (568), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 593 transitions. [2024-10-24 14:42:32,237 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 593 transitions. Word has length 69 [2024-10-24 14:42:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:32,237 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 593 transitions. [2024-10-24 14:42:32,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 593 transitions. [2024-10-24 14:42:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:42:32,238 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:32,238 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] [2024-10-24 14:42:32,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 14:42:32,239 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:32,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash 302137308, now seen corresponding path program 1 times [2024-10-24 14:42:32,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:32,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951546176] [2024-10-24 14:42:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:32,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:32,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:32,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951546176] [2024-10-24 14:42:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951546176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:32,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:32,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:42:32,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335537809] [2024-10-24 14:42:32,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:32,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:42:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:32,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:42:32,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:42:32,595 INFO L87 Difference]: Start difference. First operand 443 states and 593 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:32,907 INFO L93 Difference]: Finished difference Result 857 states and 1157 transitions. [2024-10-24 14:42:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:42:32,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 14:42:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:32,910 INFO L225 Difference]: With dead ends: 857 [2024-10-24 14:42:32,910 INFO L226 Difference]: Without dead ends: 448 [2024-10-24 14:42:32,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:42:32,912 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 7 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:32,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2635 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:42:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-10-24 14:42:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2024-10-24 14:42:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 422 states have (on average 1.3436018957345972) internal successors, (567), 427 states have internal predecessors, (567), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 592 transitions. [2024-10-24 14:42:32,926 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 592 transitions. Word has length 69 [2024-10-24 14:42:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:32,926 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 592 transitions. [2024-10-24 14:42:32,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 592 transitions. [2024-10-24 14:42:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:42:32,929 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:32,929 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] [2024-10-24 14:42:32,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 14:42:32,929 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:32,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1914808309, now seen corresponding path program 1 times [2024-10-24 14:42:32,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:32,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453168894] [2024-10-24 14:42:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:32,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:33,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453168894] [2024-10-24 14:42:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453168894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:33,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:33,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:42:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030774828] [2024-10-24 14:42:33,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:33,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:42:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:42:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:42:33,184 INFO L87 Difference]: Start difference. First operand 443 states and 592 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:33,520 INFO L93 Difference]: Finished difference Result 855 states and 1155 transitions. [2024-10-24 14:42:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:42:33,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 14:42:33,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:33,523 INFO L225 Difference]: With dead ends: 855 [2024-10-24 14:42:33,523 INFO L226 Difference]: Without dead ends: 446 [2024-10-24 14:42:33,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:42:33,524 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 4 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:33,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2594 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:42:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-10-24 14:42:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2024-10-24 14:42:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 425 states have (on average 1.3411764705882352) internal successors, (570), 430 states have internal predecessors, (570), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 595 transitions. [2024-10-24 14:42:33,538 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 595 transitions. Word has length 69 [2024-10-24 14:42:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:33,539 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 595 transitions. [2024-10-24 14:42:33,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 595 transitions. [2024-10-24 14:42:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:42:33,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:33,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:42:33,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 14:42:33,540 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:33,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash 48213054, now seen corresponding path program 1 times [2024-10-24 14:42:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:33,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934913953] [2024-10-24 14:42:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:33,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934913953] [2024-10-24 14:42:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934913953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:42:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133033630] [2024-10-24 14:42:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:42:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:42:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:42:33,966 INFO L87 Difference]: Start difference. First operand 446 states and 595 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:34,758 INFO L93 Difference]: Finished difference Result 870 states and 1174 transitions. [2024-10-24 14:42:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:42:34,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 14:42:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:34,761 INFO L225 Difference]: With dead ends: 870 [2024-10-24 14:42:34,761 INFO L226 Difference]: Without dead ends: 458 [2024-10-24 14:42:34,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:42:34,762 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 9 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:34,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3903 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:42:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-10-24 14:42:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 450. [2024-10-24 14:42:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 429 states have (on average 1.3403263403263403) internal successors, (575), 434 states have internal predecessors, (575), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 600 transitions. [2024-10-24 14:42:34,776 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 600 transitions. Word has length 70 [2024-10-24 14:42:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:34,777 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 600 transitions. [2024-10-24 14:42:34,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 600 transitions. [2024-10-24 14:42:34,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:42:34,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:34,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:42:34,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 14:42:34,778 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:34,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1976786731, now seen corresponding path program 1 times [2024-10-24 14:42:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264224620] [2024-10-24 14:42:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264224620] [2024-10-24 14:42:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264224620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:42:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296741531] [2024-10-24 14:42:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:35,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:42:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:42:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:42:35,100 INFO L87 Difference]: Start difference. First operand 450 states and 600 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:35,643 INFO L93 Difference]: Finished difference Result 879 states and 1184 transitions. [2024-10-24 14:42:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:42:35,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 14:42:35,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:35,647 INFO L225 Difference]: With dead ends: 879 [2024-10-24 14:42:35,648 INFO L226 Difference]: Without dead ends: 463 [2024-10-24 14:42:35,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:42:35,649 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 22 mSDsluCounter, 3914 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:35,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4401 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:42:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-10-24 14:42:35,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 453. [2024-10-24 14:42:35,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 432 states have (on average 1.337962962962963) internal successors, (578), 437 states have internal predecessors, (578), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 603 transitions. [2024-10-24 14:42:35,664 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 603 transitions. Word has length 70 [2024-10-24 14:42:35,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:35,665 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 603 transitions. [2024-10-24 14:42:35,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 603 transitions. [2024-10-24 14:42:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:42:35,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:35,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:42:35,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 14:42:35,666 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:35,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash 942258210, now seen corresponding path program 1 times [2024-10-24 14:42:35,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:35,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634796059] [2024-10-24 14:42:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:36,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:36,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634796059] [2024-10-24 14:42:36,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634796059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:36,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:36,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:42:36,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567645961] [2024-10-24 14:42:36,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:36,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:42:36,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:36,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:42:36,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:42:36,161 INFO L87 Difference]: Start difference. First operand 453 states and 603 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:40,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:42:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:40,876 INFO L93 Difference]: Finished difference Result 876 states and 1178 transitions. [2024-10-24 14:42:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:42:40,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 14:42:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:40,880 INFO L225 Difference]: With dead ends: 876 [2024-10-24 14:42:40,880 INFO L226 Difference]: Without dead ends: 457 [2024-10-24 14:42:40,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:42:40,881 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 31 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:40,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3426 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-10-24 14:42:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-10-24 14:42:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 454. [2024-10-24 14:42:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 433 states have (on average 1.3371824480369514) internal successors, (579), 438 states have internal predecessors, (579), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 604 transitions. [2024-10-24 14:42:40,896 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 604 transitions. Word has length 70 [2024-10-24 14:42:40,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:40,896 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 604 transitions. [2024-10-24 14:42:40,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 604 transitions. [2024-10-24 14:42:40,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:42:40,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:40,897 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:42:40,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 14:42:40,897 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:40,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash -894204710, now seen corresponding path program 1 times [2024-10-24 14:42:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489821481] [2024-10-24 14:42:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:40,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:42:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:42:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:42:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489821481] [2024-10-24 14:42:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489821481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:42:41,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:42:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:42:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843111043] [2024-10-24 14:42:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:42:41,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:42:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:42:41,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:42:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:42:41,133 INFO L87 Difference]: Start difference. First operand 454 states and 604 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:42:41,596 INFO L93 Difference]: Finished difference Result 883 states and 1187 transitions. [2024-10-24 14:42:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:42:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 14:42:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:42:41,599 INFO L225 Difference]: With dead ends: 883 [2024-10-24 14:42:41,599 INFO L226 Difference]: Without dead ends: 463 [2024-10-24 14:42:41,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:42:41,601 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 22 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:42:41,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3456 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:42:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-10-24 14:42:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 451. [2024-10-24 14:42:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 430 states have (on average 1.3395348837209302) internal successors, (576), 435 states have internal predecessors, (576), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:42:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 601 transitions. [2024-10-24 14:42:41,614 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 601 transitions. Word has length 70 [2024-10-24 14:42:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:42:41,615 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 601 transitions. [2024-10-24 14:42:41,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:42:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 601 transitions. [2024-10-24 14:42:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:42:41,616 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:42:41,616 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:42:41,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 14:42:41,616 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:42:41,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:42:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1497195914, now seen corresponding path program 1 times [2024-10-24 14:42:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:42:41,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226737722] [2024-10-24 14:42:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:42:41,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:42:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:22,655 WARN L286 SmtUtils]: Spent 8.48s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-24 14:43:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:43:30,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226737722] [2024-10-24 14:43:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226737722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:30,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:43:30,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:43:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993573753] [2024-10-24 14:43:30,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:30,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:43:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:43:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=83, Unknown=5, NotChecked=0, Total=110 [2024-10-24 14:43:30,662 INFO L87 Difference]: Start difference. First operand 451 states and 601 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:43:32,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:43:34,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:43:36,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:43:39,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:43:40,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:43:41,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:43:46,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []