./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_3_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/neural-networks/vdp_3_unsafe.c-amalgamation.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 7879594bf55f31a4ad47bc1c8356aa1a48048978517594c87550b6787e610536 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:13:57,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:13:57,910 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:13:57,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:13:57,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:13:57,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:13:57,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:13:57,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:13:57,940 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:13:57,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:13:57,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:13:57,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:13:57,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:13:57,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:13:57,943 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:13:57,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:13:57,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:13:57,944 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:13:57,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:13:57,944 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:13:57,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:13:57,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:13:57,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:13:57,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:13:57,948 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:13:57,948 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:13:57,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:13:57,948 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:13:57,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:13:57,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:13:57,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:13:57,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:13:57,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:13:57,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:13:57,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:13:57,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:13:57,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:13:57,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:13:57,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:13:57,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:13:57,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:13:57,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:13:57,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7879594bf55f31a4ad47bc1c8356aa1a48048978517594c87550b6787e610536 [2024-10-12 18:13:58,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:13:58,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:13:58,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:13:58,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:13:58,160 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:13:58,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_3_unsafe.c-amalgamation.i [2024-10-12 18:13:59,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:13:59,614 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:13:59,614 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_3_unsafe.c-amalgamation.i [2024-10-12 18:13:59,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4216c538a/252e01412cd64dc08965a59651f9b943/FLAGe08ed4254 [2024-10-12 18:13:59,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4216c538a/252e01412cd64dc08965a59651f9b943 [2024-10-12 18:13:59,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:13:59,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:13:59,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:13:59,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:13:59,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:13:59,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:13:59" (1/1) ... [2024-10-12 18:13:59,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d21323b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:59, skipping insertion in model container [2024-10-12 18:13:59,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:13:59" (1/1) ... [2024-10-12 18:13:59,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:14:00,426 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/neural-networks/vdp_3_unsafe.c-amalgamation.i[63640,63653] [2024-10-12 18:14:00,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:14:00,579 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:14:00,618 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/neural-networks/vdp_3_unsafe.c-amalgamation.i[63640,63653] [2024-10-12 18:14:00,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:14:00,868 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:14:00,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00 WrapperNode [2024-10-12 18:14:00,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:14:00,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:14:00,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:14:00,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:14:00,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:00,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:00,996 INFO L138 Inliner]: procedures = 619, calls = 1412, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1680 [2024-10-12 18:14:00,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:14:00,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:14:00,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:14:00,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:14:01,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,066 INFO L175 MemorySlicer]: Split 1388 memory accesses to 12 slices as follows [2, 7, 97, 33, 1025, 33, 97, 4, 38, 10, 6, 36]. 74 percent of accesses are in the largest equivalence class. The 1356 initializations are split as follows [2, 7, 96, 32, 1024, 32, 96, 3, 32, 0, 0, 32]. The 8 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 1, 2]. [2024-10-12 18:14:01,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,149 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:14:01,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:14:01,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:14:01,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:14:01,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (1/1) ... [2024-10-12 18:14:01,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:14:01,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:01,224 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) [2024-10-12 18:14:01,226 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 [2024-10-12 18:14:01,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-12 18:14:01,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-12 18:14:01,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-12 18:14:01,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-12 18:14:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-12 18:14:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-12 18:14:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-12 18:14:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-12 18:14:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-12 18:14:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-12 18:14:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-12 18:14:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-12 18:14:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-12 18:14:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-12 18:14:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-12 18:14:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-12 18:14:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-12 18:14:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:14:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:14:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 18:14:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 18:14:01,438 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:14:01,440 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:14:02,562 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-10-12 18:14:02,562 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:14:02,656 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:14:02,656 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-12 18:14:02,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:14:02 BoogieIcfgContainer [2024-10-12 18:14:02,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:14:02,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:14:02,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:14:02,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:14:02,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:13:59" (1/3) ... [2024-10-12 18:14:02,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3549dd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:14:02, skipping insertion in model container [2024-10-12 18:14:02,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:00" (2/3) ... [2024-10-12 18:14:02,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3549dd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:14:02, skipping insertion in model container [2024-10-12 18:14:02,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:14:02" (3/3) ... [2024-10-12 18:14:02,667 INFO L112 eAbstractionObserver]: Analyzing ICFG vdp_3_unsafe.c-amalgamation.i [2024-10-12 18:14:02,678 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:14:02,679 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:14:02,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:14:02,729 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;@7f3afb5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:14:02,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:14:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 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) [2024-10-12 18:14:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:14:02,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:02,737 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] [2024-10-12 18:14:02,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:02,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2012850619, now seen corresponding path program 1 times [2024-10-12 18:14:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:02,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84907956] [2024-10-12 18:14:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:02,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:03,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:03,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84907956] [2024-10-12 18:14:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84907956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:03,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:14:03,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:14:03,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402572241] [2024-10-12 18:14:03,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:03,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:14:03,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:14:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:14:03,148 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 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) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-12 18:14:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:03,235 INFO L93 Difference]: Finished difference Result 93 states and 159 transitions. [2024-10-12 18:14:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:14:03,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2024-10-12 18:14:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:03,242 INFO L225 Difference]: With dead ends: 93 [2024-10-12 18:14:03,242 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 18:14:03,244 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 [2024-10-12 18:14:03,247 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:03,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 18:14:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-12 18:14:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 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) [2024-10-12 18:14:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2024-10-12 18:14:03,275 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 29 [2024-10-12 18:14:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:03,276 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2024-10-12 18:14:03,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-12 18:14:03,276 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2024-10-12 18:14:03,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:14:03,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:03,277 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] [2024-10-12 18:14:03,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:14:03,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:03,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2047546805, now seen corresponding path program 1 times [2024-10-12 18:14:03,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:03,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522251522] [2024-10-12 18:14:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:03,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522251522] [2024-10-12 18:14:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522251522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:03,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:14:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:14:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633264273] [2024-10-12 18:14:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:03,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:03,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:03,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:14:03,470 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-10-12 18:14:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:03,570 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2024-10-12 18:14:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:03,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2024-10-12 18:14:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:03,571 INFO L225 Difference]: With dead ends: 84 [2024-10-12 18:14:03,572 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 18:14:03,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:14:03,574 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:03,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 18:14:03,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-12 18:14:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 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) [2024-10-12 18:14:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2024-10-12 18:14:03,582 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 29 [2024-10-12 18:14:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:03,582 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2024-10-12 18:14:03,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-10-12 18:14:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2024-10-12 18:14:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:14:03,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:03,584 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] [2024-10-12 18:14:03,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:14:03,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:03,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2028565773, now seen corresponding path program 1 times [2024-10-12 18:14:03,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:03,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999368452] [2024-10-12 18:14:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:03,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:03,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999368452] [2024-10-12 18:14:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999368452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:03,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:14:03,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 18:14:03,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646132944] [2024-10-12 18:14:03,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:03,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:14:03,871 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-10-12 18:14:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:03,972 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2024-10-12 18:14:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:03,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2024-10-12 18:14:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:03,973 INFO L225 Difference]: With dead ends: 52 [2024-10-12 18:14:03,973 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 18:14:03,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:14:03,974 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:03,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 129 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 18:14:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-12 18:14:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 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) [2024-10-12 18:14:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-12 18:14:03,977 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 29 [2024-10-12 18:14:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:03,978 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-12 18:14:03,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-10-12 18:14:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-12 18:14:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:14:03,979 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:03,979 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] [2024-10-12 18:14:03,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 18:14:03,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:03,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:03,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2026718731, now seen corresponding path program 1 times [2024-10-12 18:14:03,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:03,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275742291] [2024-10-12 18:14:03,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:03,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:04,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:04,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275742291] [2024-10-12 18:14:04,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275742291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:04,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:14:04,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:14:04,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494292066] [2024-10-12 18:14:04,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:04,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:04,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:14:04,208 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-10-12 18:14:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:04,280 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2024-10-12 18:14:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2024-10-12 18:14:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:04,281 INFO L225 Difference]: With dead ends: 76 [2024-10-12 18:14:04,282 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 18:14:04,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:14:04,283 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:04,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 18:14:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-10-12 18:14:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-12 18:14:04,290 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 29 [2024-10-12 18:14:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:04,290 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-12 18:14:04,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-10-12 18:14:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-12 18:14:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 18:14:04,291 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:04,291 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] [2024-10-12 18:14:04,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 18:14:04,291 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:04,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2060179138, now seen corresponding path program 1 times [2024-10-12 18:14:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:04,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345342283] [2024-10-12 18:14:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:04,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:04,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:04,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345342283] [2024-10-12 18:14:04,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345342283] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:04,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825946338] [2024-10-12 18:14:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:04,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:04,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:04,560 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:04,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:14:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:04,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:14:04,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:04,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:14:04,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825946338] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:04,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:04,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:14:04,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849509778] [2024-10-12 18:14:04,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:04,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:04,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:04,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:04,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:14:04,973 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-12 18:14:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:05,051 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2024-10-12 18:14:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:05,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2024-10-12 18:14:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:05,052 INFO L225 Difference]: With dead ends: 65 [2024-10-12 18:14:05,052 INFO L226 Difference]: Without dead ends: 48 [2024-10-12 18:14:05,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:14:05,054 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:05,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:05,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-12 18:14:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-12 18:14:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 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) [2024-10-12 18:14:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-12 18:14:05,057 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2024-10-12 18:14:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:05,058 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-12 18:14:05,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-12 18:14:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-12 18:14:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 18:14:05,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:05,059 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] [2024-10-12 18:14:05,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:14:05,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:05,260 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:05,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1389601723, now seen corresponding path program 1 times [2024-10-12 18:14:05,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:05,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774780546] [2024-10-12 18:14:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:05,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:14:05,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:05,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774780546] [2024-10-12 18:14:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774780546] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:05,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697490695] [2024-10-12 18:14:05,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:05,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:05,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:05,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:05,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:14:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:05,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:14:05,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:14:05,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:14:05,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697490695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:05,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:14:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 18:14:05,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609785574] [2024-10-12 18:14:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:05,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:14:05,867 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-12 18:14:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:05,934 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-12 18:14:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2024-10-12 18:14:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:05,935 INFO L225 Difference]: With dead ends: 86 [2024-10-12 18:14:05,935 INFO L226 Difference]: Without dead ends: 53 [2024-10-12 18:14:05,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:14:05,936 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:05,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-12 18:14:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-10-12 18:14:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 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) [2024-10-12 18:14:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-12 18:14:05,939 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 35 [2024-10-12 18:14:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:05,939 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-12 18:14:05,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-12 18:14:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-12 18:14:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:14:05,940 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:05,940 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] [2024-10-12 18:14:05,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:06,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-12 18:14:06,141 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:06,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:06,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1232765958, now seen corresponding path program 1 times [2024-10-12 18:14:06,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:06,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100088663] [2024-10-12 18:14:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:06,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:14:06,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100088663] [2024-10-12 18:14:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100088663] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695186339] [2024-10-12 18:14:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:06,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:06,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:06,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:06,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:14:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:06,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:14:06,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:14:06,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:14:06,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695186339] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:06,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:06,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:14:06,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533004606] [2024-10-12 18:14:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:06,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:06,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:06,734 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-10-12 18:14:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:06,802 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-10-12 18:14:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:06,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2024-10-12 18:14:06,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:06,803 INFO L225 Difference]: With dead ends: 72 [2024-10-12 18:14:06,803 INFO L226 Difference]: Without dead ends: 50 [2024-10-12 18:14:06,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:06,803 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:06,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-12 18:14:06,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-12 18:14:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 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) [2024-10-12 18:14:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-12 18:14:06,807 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 38 [2024-10-12 18:14:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:06,807 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-12 18:14:06,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-10-12 18:14:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-12 18:14:06,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-12 18:14:06,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:06,808 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] [2024-10-12 18:14:06,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 18:14:07,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:07,009 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:07,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash 112245872, now seen corresponding path program 1 times [2024-10-12 18:14:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:07,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975955304] [2024-10-12 18:14:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:07,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:14:07,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:07,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975955304] [2024-10-12 18:14:07,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975955304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:07,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084952333] [2024-10-12 18:14:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:07,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:07,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:07,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:07,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:14:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:07,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:14:07,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:14:07,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:14:07,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084952333] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:07,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:07,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:14:07,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026184629] [2024-10-12 18:14:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:07,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:07,582 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-12 18:14:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:07,657 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2024-10-12 18:14:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:07,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-10-12 18:14:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:07,659 INFO L225 Difference]: With dead ends: 62 [2024-10-12 18:14:07,659 INFO L226 Difference]: Without dead ends: 51 [2024-10-12 18:14:07,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:07,660 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:07,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-12 18:14:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-12 18:14:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 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) [2024-10-12 18:14:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-10-12 18:14:07,668 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2024-10-12 18:14:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:07,668 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-10-12 18:14:07,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-12 18:14:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-10-12 18:14:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-12 18:14:07,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:07,669 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] [2024-10-12 18:14:07,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:14:07,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:07,870 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:07,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:07,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1541916076, now seen corresponding path program 1 times [2024-10-12 18:14:07,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:07,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266496957] [2024-10-12 18:14:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:07,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:14:08,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:08,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266496957] [2024-10-12 18:14:08,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266496957] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:08,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694163428] [2024-10-12 18:14:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:08,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:08,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:08,143 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:08,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:14:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:08,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:14:08,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:14:08,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:14:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694163428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:08,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:14:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 18:14:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678265963] [2024-10-12 18:14:08,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:08,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:08,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:08,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:14:08,487 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-10-12 18:14:08,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:08,569 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2024-10-12 18:14:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:08,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2024-10-12 18:14:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:08,570 INFO L225 Difference]: With dead ends: 94 [2024-10-12 18:14:08,570 INFO L226 Difference]: Without dead ends: 54 [2024-10-12 18:14:08,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:14:08,571 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:08,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-12 18:14:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2024-10-12 18:14:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 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) [2024-10-12 18:14:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2024-10-12 18:14:08,574 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 44 [2024-10-12 18:14:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:08,575 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2024-10-12 18:14:08,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-10-12 18:14:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2024-10-12 18:14:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-12 18:14:08,575 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:08,576 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] [2024-10-12 18:14:08,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:08,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:08,776 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:08,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash -773680908, now seen corresponding path program 1 times [2024-10-12 18:14:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:08,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018793264] [2024-10-12 18:14:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:14:08,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:08,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018793264] [2024-10-12 18:14:08,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018793264] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:08,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872168792] [2024-10-12 18:14:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:08,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:08,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:08,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:08,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:14:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:09,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:09,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:14:09,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:14:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872168792] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:09,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:09,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-12 18:14:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310173876] [2024-10-12 18:14:09,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:09,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:09,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:09,392 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-12 18:14:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:09,465 INFO L93 Difference]: Finished difference Result 81 states and 107 transitions. [2024-10-12 18:14:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2024-10-12 18:14:09,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:09,466 INFO L225 Difference]: With dead ends: 81 [2024-10-12 18:14:09,466 INFO L226 Difference]: Without dead ends: 53 [2024-10-12 18:14:09,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:09,467 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:09,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-12 18:14:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-12 18:14:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 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) [2024-10-12 18:14:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2024-10-12 18:14:09,475 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 47 [2024-10-12 18:14:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:09,475 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2024-10-12 18:14:09,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-12 18:14:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2024-10-12 18:14:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:14:09,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:09,476 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] [2024-10-12 18:14:09,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 18:14:09,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:09,676 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:09,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:09,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1827829423, now seen corresponding path program 1 times [2024-10-12 18:14:09,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536730229] [2024-10-12 18:14:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:14:09,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:09,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536730229] [2024-10-12 18:14:09,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536730229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:09,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139568342] [2024-10-12 18:14:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:09,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:09,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:09,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:09,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:14:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:10,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:10,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:14:10,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:14:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139568342] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:10,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:10,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-12 18:14:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630045480] [2024-10-12 18:14:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:10,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:10,259 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-10-12 18:14:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:10,332 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2024-10-12 18:14:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2024-10-12 18:14:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:10,333 INFO L225 Difference]: With dead ends: 83 [2024-10-12 18:14:10,333 INFO L226 Difference]: Without dead ends: 54 [2024-10-12 18:14:10,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:10,334 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:10,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-12 18:14:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-12 18:14:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 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) [2024-10-12 18:14:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-10-12 18:14:10,342 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 50 [2024-10-12 18:14:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:10,342 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 18:14:10,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-10-12 18:14:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-10-12 18:14:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 18:14:10,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:10,342 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] [2024-10-12 18:14:10,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:10,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:10,543 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:10,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1499770902, now seen corresponding path program 1 times [2024-10-12 18:14:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:10,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810776919] [2024-10-12 18:14:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:10,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 18:14:10,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810776919] [2024-10-12 18:14:10,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810776919] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619457903] [2024-10-12 18:14:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:10,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:10,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:10,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:10,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:14:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:11,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:14:11,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 18:14:11,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 18:14:11,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619457903] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:11,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:11,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-12 18:14:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353927406] [2024-10-12 18:14:11,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:11,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 18:14:11,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:11,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 18:14:11,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:11,138 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2024-10-12 18:14:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:11,242 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2024-10-12 18:14:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:14:11,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 51 [2024-10-12 18:14:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:11,243 INFO L225 Difference]: With dead ends: 95 [2024-10-12 18:14:11,243 INFO L226 Difference]: Without dead ends: 63 [2024-10-12 18:14:11,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:14:11,244 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 18 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:11,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 171 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-12 18:14:11,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-10-12 18:14:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 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) [2024-10-12 18:14:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2024-10-12 18:14:11,247 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 51 [2024-10-12 18:14:11,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:11,247 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2024-10-12 18:14:11,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2024-10-12 18:14:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2024-10-12 18:14:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 18:14:11,248 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:11,248 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:11,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:11,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 18:14:11,448 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:11,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash 696793295, now seen corresponding path program 2 times [2024-10-12 18:14:11,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:11,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849646176] [2024-10-12 18:14:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 18:14:11,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:11,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849646176] [2024-10-12 18:14:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849646176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:11,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529697233] [2024-10-12 18:14:11,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:14:11,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:11,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:11,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:11,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:14:12,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:14:12,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:12,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:12,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:14:12,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:14:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529697233] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:12,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:12,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-12 18:14:12,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132878947] [2024-10-12 18:14:12,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:12,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 18:14:12,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 18:14:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:14:12,195 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2024-10-12 18:14:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:12,362 INFO L93 Difference]: Finished difference Result 109 states and 146 transitions. [2024-10-12 18:14:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:14:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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 60 [2024-10-12 18:14:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:12,363 INFO L225 Difference]: With dead ends: 109 [2024-10-12 18:14:12,363 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 18:14:12,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:14:12,363 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 26 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:12,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 225 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:14:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 18:14:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-10-12 18:14:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 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) [2024-10-12 18:14:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2024-10-12 18:14:12,367 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 60 [2024-10-12 18:14:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:12,367 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2024-10-12 18:14:12,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2024-10-12 18:14:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2024-10-12 18:14:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-12 18:14:12,368 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:12,368 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:12,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 18:14:12,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 18:14:12,569 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:12,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:12,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1979207413, now seen corresponding path program 3 times [2024-10-12 18:14:12,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:12,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767503907] [2024-10-12 18:14:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:14:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:12,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767503907] [2024-10-12 18:14:12,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767503907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:12,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873588878] [2024-10-12 18:14:12,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:14:12,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:12,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:12,876 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:12,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 18:14:13,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 18:14:13,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:13,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 18:14:13,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 18:14:13,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 18:14:13,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873588878] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:13,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:13,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 14 [2024-10-12 18:14:13,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019942876] [2024-10-12 18:14:13,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:13,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:13,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:13,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:14:13,398 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-12 18:14:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:13,478 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2024-10-12 18:14:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:13,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 72 [2024-10-12 18:14:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:13,479 INFO L225 Difference]: With dead ends: 92 [2024-10-12 18:14:13,479 INFO L226 Difference]: Without dead ends: 76 [2024-10-12 18:14:13,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:14:13,480 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:13,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-12 18:14:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-12 18:14:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 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) [2024-10-12 18:14:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2024-10-12 18:14:13,483 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 72 [2024-10-12 18:14:13,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:13,484 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2024-10-12 18:14:13,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-12 18:14:13,484 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2024-10-12 18:14:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 18:14:13,488 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:13,488 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:13,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 18:14:13,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 18:14:13,688 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:13,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash 903895624, now seen corresponding path program 1 times [2024-10-12 18:14:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110510163] [2024-10-12 18:14:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-12 18:14:14,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110510163] [2024-10-12 18:14:14,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110510163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23110769] [2024-10-12 18:14:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:14,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:14,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:14,017 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:14,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 18:14:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:14,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:14,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 18:14:14,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:14:14,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23110769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:14,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:14:14,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-12 18:14:14,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683091536] [2024-10-12 18:14:14,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:14,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:14,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:14,385 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-10-12 18:14:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:14,448 INFO L93 Difference]: Finished difference Result 142 states and 187 transitions. [2024-10-12 18:14:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:14,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 75 [2024-10-12 18:14:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:14,449 INFO L225 Difference]: With dead ends: 142 [2024-10-12 18:14:14,449 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 18:14:14,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:14,450 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:14,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 18:14:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-12 18:14:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 76 states have internal predecessors, (100), 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) [2024-10-12 18:14:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2024-10-12 18:14:14,456 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 75 [2024-10-12 18:14:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:14,456 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2024-10-12 18:14:14,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-10-12 18:14:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2024-10-12 18:14:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 18:14:14,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:14,456 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:14,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:14,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 18:14:14,661 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:14,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1573919246, now seen corresponding path program 1 times [2024-10-12 18:14:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205206455] [2024-10-12 18:14:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 18:14:15,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205206455] [2024-10-12 18:14:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205206455] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345600021] [2024-10-12 18:14:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:15,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:15,041 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:15,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 18:14:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:15,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:15,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 18:14:15,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-12 18:14:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345600021] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:15,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 14 [2024-10-12 18:14:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033744335] [2024-10-12 18:14:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:15,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:14:15,471 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-10-12 18:14:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:15,546 INFO L93 Difference]: Finished difference Result 95 states and 123 transitions. [2024-10-12 18:14:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 76 [2024-10-12 18:14:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:15,547 INFO L225 Difference]: With dead ends: 95 [2024-10-12 18:14:15,547 INFO L226 Difference]: Without dead ends: 78 [2024-10-12 18:14:15,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:14:15,548 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:15,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-12 18:14:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-12 18:14:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 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) [2024-10-12 18:14:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-10-12 18:14:15,554 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 76 [2024-10-12 18:14:15,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:15,554 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-10-12 18:14:15,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-10-12 18:14:15,555 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-10-12 18:14:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 18:14:15,555 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:15,555 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:15,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:15,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 18:14:15,756 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:15,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:15,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2040970896, now seen corresponding path program 1 times [2024-10-12 18:14:15,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:15,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674708751] [2024-10-12 18:14:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:15,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-12 18:14:16,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674708751] [2024-10-12 18:14:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674708751] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262793253] [2024-10-12 18:14:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:16,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:16,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:16,068 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:16,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 18:14:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:16,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:14:16,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 18:14:16,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-12 18:14:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262793253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:16,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-12 18:14:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73099173] [2024-10-12 18:14:16,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:16,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 18:14:16,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:16,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 18:14:16,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-12 18:14:16,604 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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) [2024-10-12 18:14:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:16,984 INFO L93 Difference]: Finished difference Result 144 states and 194 transitions. [2024-10-12 18:14:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 18:14:16,985 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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 77 [2024-10-12 18:14:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:16,985 INFO L225 Difference]: With dead ends: 144 [2024-10-12 18:14:16,985 INFO L226 Difference]: Without dead ends: 101 [2024-10-12 18:14:16,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:14:16,986 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 52 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:16,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 567 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:14:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-12 18:14:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2024-10-12 18:14:16,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.316326530612245) internal successors, (129), 98 states have internal predecessors, (129), 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) [2024-10-12 18:14:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2024-10-12 18:14:16,992 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 77 [2024-10-12 18:14:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:16,993 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2024-10-12 18:14:16,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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) [2024-10-12 18:14:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2024-10-12 18:14:16,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-12 18:14:16,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:16,994 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:17,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 18:14:17,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 18:14:17,195 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:17,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1698467549, now seen corresponding path program 2 times [2024-10-12 18:14:17,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:17,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72835961] [2024-10-12 18:14:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:17,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-10-12 18:14:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72835961] [2024-10-12 18:14:17,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72835961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921039954] [2024-10-12 18:14:17,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:14:17,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:17,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:17,607 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:17,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 18:14:18,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:14:18,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:18,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 18:14:18,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-10-12 18:14:18,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:14:18,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921039954] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:18,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:18,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-12 18:14:18,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13474524] [2024-10-12 18:14:18,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:18,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 18:14:18,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:18,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 18:14:18,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-12 18:14:18,343 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 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) [2024-10-12 18:14:18,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:18,945 INFO L93 Difference]: Finished difference Result 184 states and 248 transitions. [2024-10-12 18:14:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 18:14:18,945 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 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 98 [2024-10-12 18:14:18,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:18,946 INFO L225 Difference]: With dead ends: 184 [2024-10-12 18:14:18,946 INFO L226 Difference]: Without dead ends: 123 [2024-10-12 18:14:18,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-12 18:14:18,947 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 71 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:18,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 707 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:14:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-12 18:14:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-10-12 18:14:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.319672131147541) internal successors, (161), 122 states have internal predecessors, (161), 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) [2024-10-12 18:14:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-10-12 18:14:18,952 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 98 [2024-10-12 18:14:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:18,952 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-10-12 18:14:18,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 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) [2024-10-12 18:14:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-10-12 18:14:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 18:14:18,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:18,953 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:18,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:19,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:19,154 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:19,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash 161031331, now seen corresponding path program 3 times [2024-10-12 18:14:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:19,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382524353] [2024-10-12 18:14:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-10-12 18:14:19,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:19,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382524353] [2024-10-12 18:14:19,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382524353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:19,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082409659] [2024-10-12 18:14:19,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:14:19,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:19,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:19,958 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:19,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 18:14:20,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 18:14:20,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:20,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 18:14:20,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-12 18:14:20,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-10-12 18:14:20,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082409659] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:20,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:20,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7, 6] total 26 [2024-10-12 18:14:20,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823323475] [2024-10-12 18:14:20,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:20,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 18:14:20,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 18:14:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2024-10-12 18:14:20,690 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 26 states have internal predecessors, (141), 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) [2024-10-12 18:14:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:21,265 INFO L93 Difference]: Finished difference Result 223 states and 296 transitions. [2024-10-12 18:14:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-12 18:14:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 26 states have internal predecessors, (141), 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 122 [2024-10-12 18:14:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:21,266 INFO L225 Difference]: With dead ends: 223 [2024-10-12 18:14:21,266 INFO L226 Difference]: Without dead ends: 162 [2024-10-12 18:14:21,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:14:21,267 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 75 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:21,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 642 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:14:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-10-12 18:14:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 145. [2024-10-12 18:14:21,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3194444444444444) internal successors, (190), 144 states have internal predecessors, (190), 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) [2024-10-12 18:14:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 190 transitions. [2024-10-12 18:14:21,274 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 190 transitions. Word has length 122 [2024-10-12 18:14:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:21,274 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 190 transitions. [2024-10-12 18:14:21,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 26 states have internal predecessors, (141), 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) [2024-10-12 18:14:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 190 transitions. [2024-10-12 18:14:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-12 18:14:21,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:21,275 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:21,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:21,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:21,475 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:21,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -549540046, now seen corresponding path program 4 times [2024-10-12 18:14:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:21,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466761457] [2024-10-12 18:14:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:21,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-10-12 18:14:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:22,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466761457] [2024-10-12 18:14:22,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466761457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:22,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834926267] [2024-10-12 18:14:22,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:14:22,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:22,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:22,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:22,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 18:14:22,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:14:22,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:22,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 2285 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-12 18:14:22,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 18:14:22,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-10-12 18:14:23,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834926267] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:23,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:23,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 13] total 40 [2024-10-12 18:14:23,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869457703] [2024-10-12 18:14:23,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:23,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-12 18:14:23,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:23,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-12 18:14:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1347, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 18:14:23,216 INFO L87 Difference]: Start difference. First operand 145 states and 190 transitions. Second operand has 40 states, 40 states have (on average 4.425) internal successors, (177), 40 states have internal predecessors, (177), 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) [2024-10-12 18:14:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:26,560 INFO L93 Difference]: Finished difference Result 266 states and 362 transitions. [2024-10-12 18:14:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-12 18:14:26,561 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.425) internal successors, (177), 40 states have internal predecessors, (177), 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 133 [2024-10-12 18:14:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:26,562 INFO L225 Difference]: With dead ends: 266 [2024-10-12 18:14:26,562 INFO L226 Difference]: Without dead ends: 186 [2024-10-12 18:14:26,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=453, Invalid=1997, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 18:14:26,563 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 224 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:26,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1518 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 18:14:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-10-12 18:14:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2024-10-12 18:14:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.3224043715846994) internal successors, (242), 183 states have internal predecessors, (242), 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) [2024-10-12 18:14:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2024-10-12 18:14:26,571 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 133 [2024-10-12 18:14:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:26,571 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2024-10-12 18:14:26,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.425) internal successors, (177), 40 states have internal predecessors, (177), 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) [2024-10-12 18:14:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2024-10-12 18:14:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-12 18:14:26,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:26,573 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 16, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:26,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:26,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:26,773 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:26,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1213460933, now seen corresponding path program 5 times [2024-10-12 18:14:26,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:26,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234202838] [2024-10-12 18:14:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:26,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2024-10-12 18:14:27,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:27,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234202838] [2024-10-12 18:14:27,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234202838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:27,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031923702] [2024-10-12 18:14:27,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:14:27,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:27,722 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:27,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process