./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/memory-model/2SB.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/memory-model/2SB.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 cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:34:59,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:34:59,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:34:59,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:34:59,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:34:59,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:34:59,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:34:59,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:34:59,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:34:59,627 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:34:59,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:34:59,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:34:59,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:34:59,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:34:59,628 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:34:59,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:34:59,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:34:59,631 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:34:59,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:34:59,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:34:59,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:34:59,633 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:34:59,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:34:59,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:34:59,634 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:34:59,634 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:34:59,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:34:59,635 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:34:59,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:34:59,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:34:59,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:34:59,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:34:59,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:34:59,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:34:59,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:34:59,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:34:59,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:34:59,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:34:59,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:34:59,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:34:59,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:34:59,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:34:59,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 [2024-11-18 09:34:59,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:34:59,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:34:59,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:34:59,935 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:34:59,935 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:34:59,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-model/2SB.i [2024-11-18 09:35:01,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:35:01,606 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:35:01,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i [2024-11-18 09:35:01,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d62e7aa0/386b99f5885243ecb20099656d32251f/FLAGe567b82f2 [2024-11-18 09:35:01,635 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d62e7aa0/386b99f5885243ecb20099656d32251f [2024-11-18 09:35:01,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:35:01,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:35:01,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:35:01,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:35:01,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:35:01,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:35:01" (1/1) ... [2024-11-18 09:35:01,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a9ca227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:01, skipping insertion in model container [2024-11-18 09:35:01,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:35:01" (1/1) ... [2024-11-18 09:35:01,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:35:02,004 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i[13547,13560] [2024-11-18 09:35:02,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:35:02,020 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:35:02,124 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i[13547,13560] [2024-11-18 09:35:02,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:35:02,144 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:35:02,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02 WrapperNode [2024-11-18 09:35:02,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:35:02,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:35:02,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:35:02,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:35:02,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,234 INFO L138 Inliner]: procedures = 27, calls = 414, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 928 [2024-11-18 09:35:02,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:35:02,235 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:35:02,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:35:02,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:35:02,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,308 INFO L175 MemorySlicer]: Split 310 memory accesses to 14 slices as follows [15, 11, 12, 13, 37, 12, 10, 48, 76, 3, 13, 10, 10, 40]. 25 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [0, 0, 10, 5, 0, 5, 0, 0, 0, 0, 5, 1, 0, 0]. The 117 writes are split as follows [5, 5, 1, 2, 15, 2, 5, 10, 40, 2, 2, 3, 5, 20]. [2024-11-18 09:35:02,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:35:02,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:35:02,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:35:02,415 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:35:02,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (1/1) ... [2024-11-18 09:35:02,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:35:02,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:02,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:35:02,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-18 09:35:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-18 09:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-18 09:35:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-18 09:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-18 09:35:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-18 09:35:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-18 09:35:02,510 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-18 09:35:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:35:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:35:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:35:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:35:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 09:35:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 09:35:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 09:35:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 09:35:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 09:35:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 09:35:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 09:35:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 09:35:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 09:35:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 09:35:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 09:35:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:35:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:35:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:35:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 09:35:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 09:35:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 09:35:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 09:35:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 09:35:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 09:35:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 09:35:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 09:35:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 09:35:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 09:35:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 09:35:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2024-11-18 09:35:02,515 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2024-11-18 09:35:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:35:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:35:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:35:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 09:35:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 09:35:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 09:35:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 09:35:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 09:35:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 09:35:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 09:35:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 09:35:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 09:35:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 09:35:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 09:35:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-18 09:35:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-18 09:35:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-18 09:35:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-18 09:35:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:35:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:35:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:35:02,785 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:35:02,788 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:35:03,634 INFO L? ?]: Removed 146 outVars from TransFormulas that were not future-live. [2024-11-18 09:35:03,635 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:35:03,657 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:35:03,658 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-18 09:35:03,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:03 BoogieIcfgContainer [2024-11-18 09:35:03,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:35:03,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:35:03,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:35:03,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:35:03,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:35:01" (1/3) ... [2024-11-18 09:35:03,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6610101a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:35:03, skipping insertion in model container [2024-11-18 09:35:03,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:02" (2/3) ... [2024-11-18 09:35:03,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6610101a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:35:03, skipping insertion in model container [2024-11-18 09:35:03,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:03" (3/3) ... [2024-11-18 09:35:03,668 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2024-11-18 09:35:03,683 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:35:03,683 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:35:03,747 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:35:03,754 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;@4680275d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:35:03,754 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:35:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 154 states have internal predecessors, (232), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 09:35:03,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:03,771 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:03,772 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:03,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:03,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1488850041, now seen corresponding path program 1 times [2024-11-18 09:35:03,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:03,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067401218] [2024-11-18 09:35:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:03,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 09:35:04,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:04,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067401218] [2024-11-18 09:35:04,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067401218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:04,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:04,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:35:04,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091886198] [2024-11-18 09:35:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:04,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:04,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:04,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:35:04,395 INFO L87 Difference]: Start difference. First operand has 174 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 154 states have internal predecessors, (232), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:04,450 INFO L93 Difference]: Finished difference Result 346 states and 522 transitions. [2024-11-18 09:35:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2024-11-18 09:35:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:04,467 INFO L225 Difference]: With dead ends: 346 [2024-11-18 09:35:04,467 INFO L226 Difference]: Without dead ends: 165 [2024-11-18 09:35:04,470 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 [2024-11-18 09:35:04,473 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 1 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:04,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 448 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-18 09:35:04,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2024-11-18 09:35:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 142 states have (on average 1.2887323943661972) internal successors, (183), 144 states have internal predecessors, (183), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2024-11-18 09:35:04,527 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 48 [2024-11-18 09:35:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:04,528 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2024-11-18 09:35:04,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2024-11-18 09:35:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 09:35:04,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:04,534 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:04,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:35:04,534 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:04,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1059278353, now seen corresponding path program 1 times [2024-11-18 09:35:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:04,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76660788] [2024-11-18 09:35:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 09:35:04,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:04,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76660788] [2024-11-18 09:35:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76660788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:04,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837514659] [2024-11-18 09:35:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:04,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:04,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:04,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:04,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:35:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:05,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:05,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 09:35:05,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837514659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:05,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:05,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770850374] [2024-11-18 09:35:05,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:05,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:05,111 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:35:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:05,148 INFO L93 Difference]: Finished difference Result 322 states and 417 transitions. [2024-11-18 09:35:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-11-18 09:35:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:05,151 INFO L225 Difference]: With dead ends: 322 [2024-11-18 09:35:05,151 INFO L226 Difference]: Without dead ends: 166 [2024-11-18 09:35:05,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:05,155 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 1 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:05,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 413 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-18 09:35:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2024-11-18 09:35:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 143 states have (on average 1.2867132867132867) internal successors, (184), 145 states have internal predecessors, (184), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 212 transitions. [2024-11-18 09:35:05,177 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 212 transitions. Word has length 51 [2024-11-18 09:35:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:05,177 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 212 transitions. [2024-11-18 09:35:05,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:35:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 212 transitions. [2024-11-18 09:35:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 09:35:05,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:05,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:05,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:35:05,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:05,388 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:05,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -384397005, now seen corresponding path program 1 times [2024-11-18 09:35:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089385887] [2024-11-18 09:35:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 09:35:05,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089385887] [2024-11-18 09:35:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089385887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:05,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604064762] [2024-11-18 09:35:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:05,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:05,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:05,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:35:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:05,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:05,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 09:35:05,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:05,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604064762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:05,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:05,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915280878] [2024-11-18 09:35:05,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:05,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:05,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:05,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:05,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:05,834 INFO L87 Difference]: Start difference. First operand 165 states and 212 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:35:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:05,876 INFO L93 Difference]: Finished difference Result 311 states and 401 transitions. [2024-11-18 09:35:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:05,877 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-18 09:35:05,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:05,879 INFO L225 Difference]: With dead ends: 311 [2024-11-18 09:35:05,879 INFO L226 Difference]: Without dead ends: 172 [2024-11-18 09:35:05,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:05,883 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 6 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:05,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 406 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:05,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-18 09:35:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2024-11-18 09:35:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.2847222222222223) internal successors, (185), 146 states have internal predecessors, (185), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2024-11-18 09:35:05,902 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 55 [2024-11-18 09:35:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:05,903 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2024-11-18 09:35:05,903 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:35:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2024-11-18 09:35:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 09:35:05,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:05,905 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:05,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:35:06,110 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,SelfDestructingSolverStorable2 [2024-11-18 09:35:06,111 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:06,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:06,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1023059147, now seen corresponding path program 1 times [2024-11-18 09:35:06,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:06,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965198672] [2024-11-18 09:35:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:06,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:35:06,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:06,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965198672] [2024-11-18 09:35:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965198672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897759353] [2024-11-18 09:35:06,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:06,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:06,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:06,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:06,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:35:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:06,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:06,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 09:35:06,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:06,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897759353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:06,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:06,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:06,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348129411] [2024-11-18 09:35:06,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:06,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:06,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:06,585 INFO L87 Difference]: Start difference. First operand 166 states and 213 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:35:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:06,623 INFO L93 Difference]: Finished difference Result 300 states and 388 transitions. [2024-11-18 09:35:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:06,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2024-11-18 09:35:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:06,626 INFO L225 Difference]: With dead ends: 300 [2024-11-18 09:35:06,627 INFO L226 Difference]: Without dead ends: 173 [2024-11-18 09:35:06,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:06,631 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 6 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:06,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:06,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-18 09:35:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-11-18 09:35:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 145 states have (on average 1.282758620689655) internal successors, (186), 147 states have internal predecessors, (186), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 214 transitions. [2024-11-18 09:35:06,647 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 214 transitions. Word has length 58 [2024-11-18 09:35:06,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:06,651 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 214 transitions. [2024-11-18 09:35:06,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:35:06,652 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 214 transitions. [2024-11-18 09:35:06,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 09:35:06,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:06,653 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:06,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:06,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:06,854 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:06,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1869838307, now seen corresponding path program 1 times [2024-11-18 09:35:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732784572] [2024-11-18 09:35:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:35:06,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:06,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732784572] [2024-11-18 09:35:06,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732784572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:06,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498669142] [2024-11-18 09:35:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:06,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:07,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:07,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:35:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:07,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:07,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 09:35:07,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:07,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498669142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:07,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:07,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786125490] [2024-11-18 09:35:07,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:07,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:07,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:07,285 INFO L87 Difference]: Start difference. First operand 167 states and 214 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:07,354 INFO L93 Difference]: Finished difference Result 203 states and 269 transitions. [2024-11-18 09:35:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:07,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-18 09:35:07,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:07,358 INFO L225 Difference]: With dead ends: 203 [2024-11-18 09:35:07,358 INFO L226 Difference]: Without dead ends: 197 [2024-11-18 09:35:07,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:07,360 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 47 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:07,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 371 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:07,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-18 09:35:07,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2024-11-18 09:35:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 146 states have (on average 1.2808219178082192) internal successors, (187), 148 states have internal predecessors, (187), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 215 transitions. [2024-11-18 09:35:07,376 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 215 transitions. Word has length 61 [2024-11-18 09:35:07,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:07,376 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 215 transitions. [2024-11-18 09:35:07,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 215 transitions. [2024-11-18 09:35:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 09:35:07,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:07,378 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:07,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:07,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:07,583 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:07,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash -43287961, now seen corresponding path program 1 times [2024-11-18 09:35:07,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:07,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431789236] [2024-11-18 09:35:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:07,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 09:35:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431789236] [2024-11-18 09:35:07,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431789236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943412613] [2024-11-18 09:35:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:07,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:07,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:07,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:35:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:07,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:07,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 09:35:08,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:08,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943412613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699031592] [2024-11-18 09:35:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:08,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:08,011 INFO L87 Difference]: Start difference. First operand 168 states and 215 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:08,027 INFO L93 Difference]: Finished difference Result 205 states and 272 transitions. [2024-11-18 09:35:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2024-11-18 09:35:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:08,030 INFO L225 Difference]: With dead ends: 205 [2024-11-18 09:35:08,030 INFO L226 Difference]: Without dead ends: 169 [2024-11-18 09:35:08,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:08,031 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:08,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 413 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:08,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-18 09:35:08,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-18 09:35:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 147 states have (on average 1.2789115646258504) internal successors, (188), 149 states have internal predecessors, (188), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2024-11-18 09:35:08,038 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 71 [2024-11-18 09:35:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:08,038 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2024-11-18 09:35:08,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2024-11-18 09:35:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 09:35:08,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:08,040 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:08,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 09:35:08,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:08,245 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:08,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:08,245 INFO L85 PathProgramCache]: Analyzing trace with hash -723346331, now seen corresponding path program 1 times [2024-11-18 09:35:08,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:08,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928127215] [2024-11-18 09:35:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:08,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 09:35:08,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928127215] [2024-11-18 09:35:08,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928127215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:08,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873180197] [2024-11-18 09:35:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:08,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:08,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:08,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:08,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:35:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:08,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:08,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:35:08,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:08,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873180197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:08,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:08,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:08,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515430043] [2024-11-18 09:35:08,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:08,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:08,703 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:08,718 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-11-18 09:35:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:08,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2024-11-18 09:35:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:08,720 INFO L225 Difference]: With dead ends: 206 [2024-11-18 09:35:08,720 INFO L226 Difference]: Without dead ends: 200 [2024-11-18 09:35:08,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:08,721 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 37 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:08,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 414 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-18 09:35:08,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2024-11-18 09:35:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 177 states have (on average 1.3333333333333333) internal successors, (236), 179 states have internal predecessors, (236), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2024-11-18 09:35:08,730 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 71 [2024-11-18 09:35:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:08,730 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2024-11-18 09:35:08,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2024-11-18 09:35:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-18 09:35:08,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:08,733 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:08,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:35:08,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:08,934 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:08,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash -602784093, now seen corresponding path program 1 times [2024-11-18 09:35:08,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:08,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041823269] [2024-11-18 09:35:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:08,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 09:35:09,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:09,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041823269] [2024-11-18 09:35:09,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041823269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995045292] [2024-11-18 09:35:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:09,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:09,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:09,049 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:09,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:35:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:09,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:09,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:35:09,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:09,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995045292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:09,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:09,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:09,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629273023] [2024-11-18 09:35:09,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:09,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:09,355 INFO L87 Difference]: Start difference. First operand 199 states and 264 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:09,368 INFO L93 Difference]: Finished difference Result 267 states and 369 transitions. [2024-11-18 09:35:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:09,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 85 [2024-11-18 09:35:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:09,370 INFO L225 Difference]: With dead ends: 267 [2024-11-18 09:35:09,370 INFO L226 Difference]: Without dead ends: 261 [2024-11-18 09:35:09,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:09,371 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 23 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:09,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 414 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-18 09:35:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-18 09:35:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 239 states have (on average 1.397489539748954) internal successors, (334), 241 states have internal predecessors, (334), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 362 transitions. [2024-11-18 09:35:09,380 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 362 transitions. Word has length 85 [2024-11-18 09:35:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:09,380 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 362 transitions. [2024-11-18 09:35:09,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 362 transitions. [2024-11-18 09:35:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 09:35:09,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:09,382 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:09,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:35:09,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:09,583 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:09,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2050220215, now seen corresponding path program 1 times [2024-11-18 09:35:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185159659] [2024-11-18 09:35:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:35:09,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185159659] [2024-11-18 09:35:09,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185159659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706946560] [2024-11-18 09:35:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:09,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:09,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:09,738 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:09,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:35:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:10,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:10,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 09:35:10,117 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706946560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:10,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506489294] [2024-11-18 09:35:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:10,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:10,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:10,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:10,119 INFO L87 Difference]: Start difference. First operand 261 states and 362 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:10,136 INFO L93 Difference]: Finished difference Result 391 states and 565 transitions. [2024-11-18 09:35:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:10,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 101 [2024-11-18 09:35:10,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:10,139 INFO L225 Difference]: With dead ends: 391 [2024-11-18 09:35:10,140 INFO L226 Difference]: Without dead ends: 385 [2024-11-18 09:35:10,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:10,143 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 22 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:10,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 415 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:10,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-18 09:35:10,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2024-11-18 09:35:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 363 states have (on average 1.4600550964187329) internal successors, (530), 365 states have internal predecessors, (530), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 558 transitions. [2024-11-18 09:35:10,156 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 558 transitions. Word has length 101 [2024-11-18 09:35:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:10,157 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 558 transitions. [2024-11-18 09:35:10,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 558 transitions. [2024-11-18 09:35:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-18 09:35:10,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:10,159 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:10,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:35:10,359 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,SelfDestructingSolverStorable8 [2024-11-18 09:35:10,360 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:10,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1515910087, now seen corresponding path program 1 times [2024-11-18 09:35:10,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:10,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975538939] [2024-11-18 09:35:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 09:35:10,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975538939] [2024-11-18 09:35:10,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975538939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708971052] [2024-11-18 09:35:10,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:10,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:10,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:10,517 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:10,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:35:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:10,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:10,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 09:35:10,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708971052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:10,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:10,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:10,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801273428] [2024-11-18 09:35:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:10,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:10,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:10,930 INFO L87 Difference]: Start difference. First operand 385 states and 558 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:10,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:10,944 INFO L93 Difference]: Finished difference Result 639 states and 957 transitions. [2024-11-18 09:35:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:10,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 111 [2024-11-18 09:35:10,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:10,947 INFO L225 Difference]: With dead ends: 639 [2024-11-18 09:35:10,948 INFO L226 Difference]: Without dead ends: 633 [2024-11-18 09:35:10,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:10,949 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:10,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 413 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-11-18 09:35:10,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2024-11-18 09:35:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 611 states have (on average 1.5090016366612111) internal successors, (922), 613 states have internal predecessors, (922), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 950 transitions. [2024-11-18 09:35:10,966 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 950 transitions. Word has length 111 [2024-11-18 09:35:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:10,967 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 950 transitions. [2024-11-18 09:35:10,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 09:35:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 950 transitions. [2024-11-18 09:35:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 09:35:10,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:10,970 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:10,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:11,170 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,SelfDestructingSolverStorable9 [2024-11-18 09:35:11,171 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:11,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:11,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1155272663, now seen corresponding path program 1 times [2024-11-18 09:35:11,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:11,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183781020] [2024-11-18 09:35:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 09:35:11,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:11,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183781020] [2024-11-18 09:35:11,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183781020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:11,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208678396] [2024-11-18 09:35:11,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:11,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:11,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:11,339 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) [2024-11-18 09:35:11,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:35:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:11,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:11,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 09:35:11,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 09:35:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208678396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:11,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:11,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:35:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325730223] [2024-11-18 09:35:11,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:11,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:35:11,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:11,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:35:11,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:35:11,786 INFO L87 Difference]: Start difference. First operand 633 states and 950 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 09:35:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:11,826 INFO L93 Difference]: Finished difference Result 1267 states and 1903 transitions. [2024-11-18 09:35:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:35:11,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 141 [2024-11-18 09:35:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:11,830 INFO L225 Difference]: With dead ends: 1267 [2024-11-18 09:35:11,830 INFO L226 Difference]: Without dead ends: 639 [2024-11-18 09:35:11,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:35:11,832 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 2 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:11,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1024 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2024-11-18 09:35:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2024-11-18 09:35:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.5040518638573743) internal successors, (928), 619 states have internal predecessors, (928), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 956 transitions. [2024-11-18 09:35:11,848 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 956 transitions. Word has length 141 [2024-11-18 09:35:11,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:11,848 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 956 transitions. [2024-11-18 09:35:11,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 09:35:11,848 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 956 transitions. [2024-11-18 09:35:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 09:35:11,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:11,851 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:11,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:12,051 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,SelfDestructingSolverStorable10 [2024-11-18 09:35:12,051 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:12,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2129025981, now seen corresponding path program 2 times [2024-11-18 09:35:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:12,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110752980] [2024-11-18 09:35:12,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:12,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:12,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:12,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-18 09:35:12,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:12,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110752980] [2024-11-18 09:35:12,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110752980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:12,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071093199] [2024-11-18 09:35:12,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:12,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:12,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:12,268 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) [2024-11-18 09:35:12,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:35:13,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:13,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:13,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:35:13,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 09:35:13,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 09:35:13,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071093199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:13,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:13,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 13 [2024-11-18 09:35:13,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561136925] [2024-11-18 09:35:13,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:13,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:35:13,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:13,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:35:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:35:13,206 INFO L87 Difference]: Start difference. First operand 639 states and 956 transitions. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:35:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:13,264 INFO L93 Difference]: Finished difference Result 1279 states and 1920 transitions. [2024-11-18 09:35:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:35:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 147 [2024-11-18 09:35:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:13,268 INFO L225 Difference]: With dead ends: 1279 [2024-11-18 09:35:13,268 INFO L226 Difference]: Without dead ends: 651 [2024-11-18 09:35:13,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:35:13,269 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:13,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 611 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:13,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-11-18 09:35:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2024-11-18 09:35:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 629 states have (on average 1.494435612082671) internal successors, (940), 631 states have internal predecessors, (940), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 09:35:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 968 transitions. [2024-11-18 09:35:13,284 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 968 transitions. Word has length 147 [2024-11-18 09:35:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:13,285 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 968 transitions. [2024-11-18 09:35:13,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:35:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 968 transitions. [2024-11-18 09:35:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 09:35:13,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:13,287 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:13,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:13,491 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,SelfDestructingSolverStorable11 [2024-11-18 09:35:13,492 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:13,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1964515491, now seen corresponding path program 3 times [2024-11-18 09:35:13,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:13,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077799651] [2024-11-18 09:35:13,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:35:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:13,629 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:35:13,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-18 09:35:14,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:14,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077799651] [2024-11-18 09:35:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077799651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:14,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:14,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:35:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107879897] [2024-11-18 09:35:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:14,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:35:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:14,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:35:14,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:35:14,100 INFO L87 Difference]: Start difference. First operand 651 states and 968 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:35:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:15,424 INFO L93 Difference]: Finished difference Result 1233 states and 1863 transitions. [2024-11-18 09:35:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:35:15,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 161 [2024-11-18 09:35:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:15,428 INFO L225 Difference]: With dead ends: 1233 [2024-11-18 09:35:15,428 INFO L226 Difference]: Without dead ends: 724 [2024-11-18 09:35:15,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:35:15,430 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 182 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:15,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 969 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 09:35:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-18 09:35:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 692. [2024-11-18 09:35:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 664 states have (on average 1.480421686746988) internal successors, (983), 668 states have internal predecessors, (983), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 09:35:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1023 transitions. [2024-11-18 09:35:15,454 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1023 transitions. Word has length 161 [2024-11-18 09:35:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:15,455 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1023 transitions. [2024-11-18 09:35:15,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:35:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1023 transitions. [2024-11-18 09:35:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 09:35:15,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:15,458 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:15,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 09:35:15,459 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:15,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:15,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1026283054, now seen corresponding path program 1 times [2024-11-18 09:35:15,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:15,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590120634] [2024-11-18 09:35:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:15,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-18 09:35:15,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:15,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590120634] [2024-11-18 09:35:15,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590120634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:15,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021198335] [2024-11-18 09:35:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:15,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:15,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:15,717 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) [2024-11-18 09:35:15,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:35:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:16,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:16,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-18 09:35:16,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-18 09:35:16,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021198335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:16,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:16,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:35:16,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918236577] [2024-11-18 09:35:16,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:16,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:35:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:35:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:35:16,238 INFO L87 Difference]: Start difference. First operand 692 states and 1023 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:35:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:16,336 INFO L93 Difference]: Finished difference Result 1360 states and 2024 transitions. [2024-11-18 09:35:16,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:35:16,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 179 [2024-11-18 09:35:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:16,341 INFO L225 Difference]: With dead ends: 1360 [2024-11-18 09:35:16,341 INFO L226 Difference]: Without dead ends: 713 [2024-11-18 09:35:16,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:35:16,343 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 24 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:16,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 807 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-18 09:35:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-18 09:35:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 682 states have (on average 1.4721407624633431) internal successors, (1004), 686 states have internal predecessors, (1004), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-18 09:35:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1050 transitions. [2024-11-18 09:35:16,366 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1050 transitions. Word has length 179 [2024-11-18 09:35:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:16,366 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1050 transitions. [2024-11-18 09:35:16,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:35:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1050 transitions. [2024-11-18 09:35:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-18 09:35:16,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:16,369 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:16,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:16,570 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,SelfDestructingSolverStorable13 [2024-11-18 09:35:16,570 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:16,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash 763515522, now seen corresponding path program 2 times [2024-11-18 09:35:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765377842] [2024-11-18 09:35:16,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:16,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:16,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:16,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-18 09:35:16,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765377842] [2024-11-18 09:35:16,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765377842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763696619] [2024-11-18 09:35:16,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:16,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:16,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:16,848 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) [2024-11-18 09:35:16,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 09:35:17,626 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:17,626 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:17,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:35:17,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-18 09:35:17,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-18 09:35:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763696619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:17,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:17,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 13 [2024-11-18 09:35:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953727815] [2024-11-18 09:35:17,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:17,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:35:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:35:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:35:17,797 INFO L87 Difference]: Start difference. First operand 713 states and 1050 transitions. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:35:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:17,987 INFO L93 Difference]: Finished difference Result 1408 states and 2089 transitions. [2024-11-18 09:35:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:35:17,990 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 188 [2024-11-18 09:35:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:17,995 INFO L225 Difference]: With dead ends: 1408 [2024-11-18 09:35:17,995 INFO L226 Difference]: Without dead ends: 761 [2024-11-18 09:35:17,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:35:17,998 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 93 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:17,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 608 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-18 09:35:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 755. [2024-11-18 09:35:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 718 states have (on average 1.456824512534819) internal successors, (1046), 722 states have internal predecessors, (1046), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-18 09:35:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1104 transitions. [2024-11-18 09:35:18,021 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1104 transitions. Word has length 188 [2024-11-18 09:35:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:18,022 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 1104 transitions. [2024-11-18 09:35:18,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:35:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1104 transitions. [2024-11-18 09:35:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 09:35:18,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:18,026 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:18,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 09:35:18,229 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,SelfDestructingSolverStorable14 [2024-11-18 09:35:18,230 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:18,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1571099438, now seen corresponding path program 3 times [2024-11-18 09:35:18,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:18,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137833207] [2024-11-18 09:35:18,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:35:18,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:18,334 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:35:18,334 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-18 09:35:19,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:19,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137833207] [2024-11-18 09:35:19,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137833207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:19,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794140619] [2024-11-18 09:35:19,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:35:19,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:19,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:19,218 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) [2024-11-18 09:35:19,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 09:35:20,077 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:35:20,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:20,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 09:35:20,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:20,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 62 [2024-11-18 09:35:21,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:35:21,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 80 [2024-11-18 09:35:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-18 09:35:21,381 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:21,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794140619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:21,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:21,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-18 09:35:21,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563689172] [2024-11-18 09:35:21,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:21,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:35:21,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:21,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:35:21,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:35:21,383 INFO L87 Difference]: Start difference. First operand 755 states and 1104 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 09:35:22,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:22,853 INFO L93 Difference]: Finished difference Result 2066 states and 3079 transitions. [2024-11-18 09:35:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:35:22,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 206 [2024-11-18 09:35:22,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:22,860 INFO L225 Difference]: With dead ends: 2066 [2024-11-18 09:35:22,860 INFO L226 Difference]: Without dead ends: 1557 [2024-11-18 09:35:22,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:35:22,863 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 285 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:22,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1431 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 09:35:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2024-11-18 09:35:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 958. [2024-11-18 09:35:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 886 states have (on average 1.4232505643340858) internal successors, (1261), 914 states have internal predecessors, (1261), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1379 transitions. [2024-11-18 09:35:22,918 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1379 transitions. Word has length 206 [2024-11-18 09:35:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:22,919 INFO L471 AbstractCegarLoop]: Abstraction has 958 states and 1379 transitions. [2024-11-18 09:35:22,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 09:35:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1379 transitions. [2024-11-18 09:35:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:22,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:22,924 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:22,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:23,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:23,125 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:23,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 658592155, now seen corresponding path program 1 times [2024-11-18 09:35:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033438846] [2024-11-18 09:35:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-18 09:35:23,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:23,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033438846] [2024-11-18 09:35:23,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033438846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:23,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:23,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:35:23,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609242888] [2024-11-18 09:35:23,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:23,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:35:23,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:35:23,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:23,713 INFO L87 Difference]: Start difference. First operand 958 states and 1379 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:23,933 INFO L93 Difference]: Finished difference Result 1940 states and 2922 transitions. [2024-11-18 09:35:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:35:23,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:23,941 INFO L225 Difference]: With dead ends: 1940 [2024-11-18 09:35:23,941 INFO L226 Difference]: Without dead ends: 1438 [2024-11-18 09:35:23,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:23,943 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 39 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:23,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 722 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:35:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2024-11-18 09:35:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1102. [2024-11-18 09:35:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1030 states have (on average 1.4262135922330097) internal successors, (1469), 1058 states have internal predecessors, (1469), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1587 transitions. [2024-11-18 09:35:24,001 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1587 transitions. Word has length 222 [2024-11-18 09:35:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:24,001 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1587 transitions. [2024-11-18 09:35:24,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1587 transitions. [2024-11-18 09:35:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:24,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:24,006 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:24,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 09:35:24,007 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:24,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1472868959, now seen corresponding path program 1 times [2024-11-18 09:35:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495669479] [2024-11-18 09:35:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-11-18 09:35:24,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:24,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495669479] [2024-11-18 09:35:24,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495669479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:24,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:24,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711697737] [2024-11-18 09:35:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:24,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:24,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:24,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:24,330 INFO L87 Difference]: Start difference. First operand 1102 states and 1587 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:24,375 INFO L93 Difference]: Finished difference Result 1796 states and 2650 transitions. [2024-11-18 09:35:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:24,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:24,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:24,381 INFO L225 Difference]: With dead ends: 1796 [2024-11-18 09:35:24,381 INFO L226 Difference]: Without dead ends: 1150 [2024-11-18 09:35:24,383 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 [2024-11-18 09:35:24,383 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:24,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 611 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2024-11-18 09:35:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1134. [2024-11-18 09:35:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1062 states have (on average 1.4133709981167608) internal successors, (1501), 1090 states have internal predecessors, (1501), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1619 transitions. [2024-11-18 09:35:24,429 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1619 transitions. Word has length 222 [2024-11-18 09:35:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:24,429 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1619 transitions. [2024-11-18 09:35:24,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1619 transitions. [2024-11-18 09:35:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:24,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:24,435 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:24,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 09:35:24,436 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:24,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1577423655, now seen corresponding path program 1 times [2024-11-18 09:35:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:24,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161718754] [2024-11-18 09:35:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:24,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-11-18 09:35:24,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:24,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161718754] [2024-11-18 09:35:24,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161718754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:24,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:24,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:24,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318457054] [2024-11-18 09:35:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:24,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:24,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:24,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:24,777 INFO L87 Difference]: Start difference. First operand 1134 states and 1619 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:24,838 INFO L93 Difference]: Finished difference Result 1860 states and 2730 transitions. [2024-11-18 09:35:24,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:24,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:24,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:24,844 INFO L225 Difference]: With dead ends: 1860 [2024-11-18 09:35:24,844 INFO L226 Difference]: Without dead ends: 1182 [2024-11-18 09:35:24,847 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 [2024-11-18 09:35:24,847 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:24,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 613 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:24,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2024-11-18 09:35:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2024-11-18 09:35:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1110 states have (on average 1.3954954954954955) internal successors, (1549), 1138 states have internal predecessors, (1549), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1667 transitions. [2024-11-18 09:35:24,913 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1667 transitions. Word has length 222 [2024-11-18 09:35:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:24,913 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1667 transitions. [2024-11-18 09:35:24,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1667 transitions. [2024-11-18 09:35:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:24,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:24,919 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:24,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 09:35:24,919 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:24,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1730391767, now seen corresponding path program 1 times [2024-11-18 09:35:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:24,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839553069] [2024-11-18 09:35:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:24,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2024-11-18 09:35:25,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:25,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839553069] [2024-11-18 09:35:25,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839553069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:25,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:25,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:25,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711985517] [2024-11-18 09:35:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:25,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:25,215 INFO L87 Difference]: Start difference. First operand 1182 states and 1667 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:25,263 INFO L93 Difference]: Finished difference Result 1924 states and 2762 transitions. [2024-11-18 09:35:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:25,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:25,269 INFO L225 Difference]: With dead ends: 1924 [2024-11-18 09:35:25,269 INFO L226 Difference]: Without dead ends: 1198 [2024-11-18 09:35:25,271 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 [2024-11-18 09:35:25,271 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:25,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 616 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:25,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2024-11-18 09:35:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1182. [2024-11-18 09:35:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1110 states have (on average 1.3810810810810812) internal successors, (1533), 1138 states have internal predecessors, (1533), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1651 transitions. [2024-11-18 09:35:25,324 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1651 transitions. Word has length 222 [2024-11-18 09:35:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:25,325 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1651 transitions. [2024-11-18 09:35:25,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1651 transitions. [2024-11-18 09:35:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:25,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:25,329 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:25,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 09:35:25,330 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:25,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash 875631787, now seen corresponding path program 1 times [2024-11-18 09:35:25,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:25,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775590193] [2024-11-18 09:35:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-11-18 09:35:25,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:25,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775590193] [2024-11-18 09:35:25,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775590193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:25,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:25,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110621577] [2024-11-18 09:35:25,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:25,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:25,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:25,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:25,652 INFO L87 Difference]: Start difference. First operand 1182 states and 1651 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:25,694 INFO L93 Difference]: Finished difference Result 1956 states and 2778 transitions. [2024-11-18 09:35:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:25,699 INFO L225 Difference]: With dead ends: 1956 [2024-11-18 09:35:25,699 INFO L226 Difference]: Without dead ends: 1230 [2024-11-18 09:35:25,700 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 [2024-11-18 09:35:25,701 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:25,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 616 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:25,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2024-11-18 09:35:25,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1214. [2024-11-18 09:35:25,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1142 states have (on average 1.3563922942206654) internal successors, (1549), 1170 states have internal predecessors, (1549), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1667 transitions. [2024-11-18 09:35:25,742 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1667 transitions. Word has length 222 [2024-11-18 09:35:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:25,743 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1667 transitions. [2024-11-18 09:35:25,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1667 transitions. [2024-11-18 09:35:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:25,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:25,749 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:25,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 09:35:25,749 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:25,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash -712716115, now seen corresponding path program 1 times [2024-11-18 09:35:25,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:25,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040741376] [2024-11-18 09:35:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-18 09:35:26,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040741376] [2024-11-18 09:35:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040741376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:26,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:26,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:35:26,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46767227] [2024-11-18 09:35:26,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:26,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:35:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:35:26,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:26,196 INFO L87 Difference]: Start difference. First operand 1214 states and 1667 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:26,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:26,418 INFO L93 Difference]: Finished difference Result 2276 states and 3194 transitions. [2024-11-18 09:35:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:35:26,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:26,425 INFO L225 Difference]: With dead ends: 2276 [2024-11-18 09:35:26,425 INFO L226 Difference]: Without dead ends: 1518 [2024-11-18 09:35:26,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:26,428 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 16 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:26,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 742 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:35:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2024-11-18 09:35:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1406. [2024-11-18 09:35:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1334 states have (on average 1.3650674662668665) internal successors, (1821), 1362 states have internal predecessors, (1821), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 1939 transitions. [2024-11-18 09:35:26,476 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 1939 transitions. Word has length 222 [2024-11-18 09:35:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:26,477 INFO L471 AbstractCegarLoop]: Abstraction has 1406 states and 1939 transitions. [2024-11-18 09:35:26,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 1939 transitions. [2024-11-18 09:35:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:26,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:26,482 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:26,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 09:35:26,483 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:26,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:26,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1130112721, now seen corresponding path program 1 times [2024-11-18 09:35:26,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:26,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651314109] [2024-11-18 09:35:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:26,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-18 09:35:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651314109] [2024-11-18 09:35:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651314109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:26,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:26,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:26,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331880472] [2024-11-18 09:35:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:26,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:26,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:26,757 INFO L87 Difference]: Start difference. First operand 1406 states and 1939 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:26,800 INFO L93 Difference]: Finished difference Result 2404 states and 3354 transitions. [2024-11-18 09:35:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:26,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:26,807 INFO L225 Difference]: With dead ends: 2404 [2024-11-18 09:35:26,807 INFO L226 Difference]: Without dead ends: 1454 [2024-11-18 09:35:26,809 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 [2024-11-18 09:35:26,809 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:26,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 611 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:26,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2024-11-18 09:35:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1438. [2024-11-18 09:35:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1366 states have (on average 1.356515373352855) internal successors, (1853), 1394 states have internal predecessors, (1853), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1971 transitions. [2024-11-18 09:35:26,860 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1971 transitions. Word has length 222 [2024-11-18 09:35:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:26,861 INFO L471 AbstractCegarLoop]: Abstraction has 1438 states and 1971 transitions. [2024-11-18 09:35:26,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1971 transitions. [2024-11-18 09:35:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:26,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:26,866 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:26,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 09:35:26,866 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:26,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash 831461937, now seen corresponding path program 1 times [2024-11-18 09:35:26,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:26,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336064467] [2024-11-18 09:35:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:26,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-18 09:35:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:27,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336064467] [2024-11-18 09:35:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336064467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:27,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:27,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312858315] [2024-11-18 09:35:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:27,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:27,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:27,248 INFO L87 Difference]: Start difference. First operand 1438 states and 1971 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:27,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:27,320 INFO L93 Difference]: Finished difference Result 2468 states and 3434 transitions. [2024-11-18 09:35:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:27,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:27,327 INFO L225 Difference]: With dead ends: 2468 [2024-11-18 09:35:27,328 INFO L226 Difference]: Without dead ends: 1486 [2024-11-18 09:35:27,330 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 [2024-11-18 09:35:27,331 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:27,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 613 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2024-11-18 09:35:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1486. [2024-11-18 09:35:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1414 states have (on average 1.3444130127298444) internal successors, (1901), 1442 states have internal predecessors, (1901), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2019 transitions. [2024-11-18 09:35:27,385 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2019 transitions. Word has length 222 [2024-11-18 09:35:27,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:27,386 INFO L471 AbstractCegarLoop]: Abstraction has 1486 states and 2019 transitions. [2024-11-18 09:35:27,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2019 transitions. [2024-11-18 09:35:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:27,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:27,391 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:27,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 09:35:27,392 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:27,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1469528621, now seen corresponding path program 2 times [2024-11-18 09:35:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:27,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035869223] [2024-11-18 09:35:27,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:27,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:27,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:27,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-18 09:35:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:27,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035869223] [2024-11-18 09:35:27,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035869223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:27,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:27,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:35:27,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927457765] [2024-11-18 09:35:27,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:27,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:35:27,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:35:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:27,822 INFO L87 Difference]: Start difference. First operand 1486 states and 2019 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:27,988 INFO L93 Difference]: Finished difference Result 2852 states and 3866 transitions. [2024-11-18 09:35:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:35:27,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:27,995 INFO L225 Difference]: With dead ends: 2852 [2024-11-18 09:35:27,996 INFO L226 Difference]: Without dead ends: 1822 [2024-11-18 09:35:27,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:28,001 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 58 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:28,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 613 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2024-11-18 09:35:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1582. [2024-11-18 09:35:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1510 states have (on average 1.3119205298013246) internal successors, (1981), 1538 states have internal predecessors, (1981), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2099 transitions. [2024-11-18 09:35:28,073 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2099 transitions. Word has length 222 [2024-11-18 09:35:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:28,074 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 2099 transitions. [2024-11-18 09:35:28,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2099 transitions. [2024-11-18 09:35:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:28,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:28,080 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:28,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 09:35:28,080 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:28,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:28,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2129060143, now seen corresponding path program 1 times [2024-11-18 09:35:28,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:28,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278579287] [2024-11-18 09:35:28,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:28,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-18 09:35:28,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:28,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278579287] [2024-11-18 09:35:28,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278579287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:28,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:28,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:28,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723522195] [2024-11-18 09:35:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:28,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:28,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:28,390 INFO L87 Difference]: Start difference. First operand 1582 states and 2099 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:28,430 INFO L93 Difference]: Finished difference Result 2756 states and 3674 transitions. [2024-11-18 09:35:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:28,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:28,437 INFO L225 Difference]: With dead ends: 2756 [2024-11-18 09:35:28,437 INFO L226 Difference]: Without dead ends: 1630 [2024-11-18 09:35:28,439 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 [2024-11-18 09:35:28,439 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:28,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 616 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2024-11-18 09:35:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1614. [2024-11-18 09:35:28,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1542 states have (on average 1.2950713359273671) internal successors, (1997), 1570 states have internal predecessors, (1997), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2115 transitions. [2024-11-18 09:35:28,486 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2115 transitions. Word has length 222 [2024-11-18 09:35:28,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:28,486 INFO L471 AbstractCegarLoop]: Abstraction has 1614 states and 2115 transitions. [2024-11-18 09:35:28,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2115 transitions. [2024-11-18 09:35:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:28,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:28,492 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:28,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 09:35:28,492 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:28,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:28,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1285054641, now seen corresponding path program 1 times [2024-11-18 09:35:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:28,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297175663] [2024-11-18 09:35:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-18 09:35:28,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297175663] [2024-11-18 09:35:28,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297175663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:28,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:28,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740915538] [2024-11-18 09:35:28,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:28,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:28,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:28,745 INFO L87 Difference]: Start difference. First operand 1614 states and 2115 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:28,815 INFO L93 Difference]: Finished difference Result 2820 states and 3706 transitions. [2024-11-18 09:35:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:28,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:28,822 INFO L225 Difference]: With dead ends: 2820 [2024-11-18 09:35:28,822 INFO L226 Difference]: Without dead ends: 1662 [2024-11-18 09:35:28,824 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 [2024-11-18 09:35:28,825 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:28,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 616 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2024-11-18 09:35:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1646. [2024-11-18 09:35:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1574 states have (on average 1.2789072426937738) internal successors, (2013), 1602 states have internal predecessors, (2013), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2131 transitions. [2024-11-18 09:35:28,874 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2131 transitions. Word has length 222 [2024-11-18 09:35:28,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:28,875 INFO L471 AbstractCegarLoop]: Abstraction has 1646 states and 2131 transitions. [2024-11-18 09:35:28,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2131 transitions. [2024-11-18 09:35:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:28,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:28,880 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:28,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 09:35:28,881 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:28,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:28,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1212668083, now seen corresponding path program 1 times [2024-11-18 09:35:28,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:28,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95461522] [2024-11-18 09:35:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:28,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-18 09:35:29,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:29,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95461522] [2024-11-18 09:35:29,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95461522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:29,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:29,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:35:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901971302] [2024-11-18 09:35:29,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:29,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:35:29,118 INFO L87 Difference]: Start difference. First operand 1646 states and 2131 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:29,160 INFO L93 Difference]: Finished difference Result 2884 states and 3754 transitions. [2024-11-18 09:35:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:29,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2024-11-18 09:35:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:29,167 INFO L225 Difference]: With dead ends: 2884 [2024-11-18 09:35:29,167 INFO L226 Difference]: Without dead ends: 1694 [2024-11-18 09:35:29,169 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 [2024-11-18 09:35:29,169 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:29,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2024-11-18 09:35:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1694. [2024-11-18 09:35:29,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1622 states have (on average 1.2509247842170161) internal successors, (2029), 1650 states have internal predecessors, (2029), 59 states have call successors, (59), 12 states have call predecessors, (59), 12 states have return successors, (59), 37 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 09:35:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2147 transitions. [2024-11-18 09:35:29,215 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2147 transitions. Word has length 222 [2024-11-18 09:35:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:29,216 INFO L471 AbstractCegarLoop]: Abstraction has 1694 states and 2147 transitions. [2024-11-18 09:35:29,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2147 transitions. [2024-11-18 09:35:29,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 09:35:29,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:29,221 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:29,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 09:35:29,222 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:29,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:29,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1914267957, now seen corresponding path program 1 times [2024-11-18 09:35:29,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:29,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702481628] [2024-11-18 09:35:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:29,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-18 09:35:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702481628] [2024-11-18 09:35:29,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702481628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:29,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625895148] [2024-11-18 09:35:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:29,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:29,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:29,510 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) [2024-11-18 09:35:29,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 09:35:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:30,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:35:30,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-18 09:35:30,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-18 09:35:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625895148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:30,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-18 09:35:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356456025] [2024-11-18 09:35:30,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:30,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 09:35:30,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 09:35:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:35:30,326 INFO L87 Difference]: Start difference. First operand 1694 states and 2147 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:35:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:30,443 INFO L93 Difference]: Finished difference Result 3263 states and 4145 transitions. [2024-11-18 09:35:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:35:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 222 [2024-11-18 09:35:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:30,451 INFO L225 Difference]: With dead ends: 3263 [2024-11-18 09:35:30,451 INFO L226 Difference]: Without dead ends: 1738 [2024-11-18 09:35:30,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:35:30,454 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 51 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:30,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 416 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2024-11-18 09:35:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2024-11-18 09:35:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1658 states have (on average 1.250301568154403) internal successors, (2073), 1690 states have internal predecessors, (2073), 67 states have call successors, (67), 12 states have call predecessors, (67), 12 states have return successors, (67), 41 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 09:35:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2207 transitions. [2024-11-18 09:35:30,519 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2207 transitions. Word has length 222 [2024-11-18 09:35:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:30,520 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 2207 transitions. [2024-11-18 09:35:30,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:35:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2207 transitions. [2024-11-18 09:35:30,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-18 09:35:30,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:30,525 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:30,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 09:35:30,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-18 09:35:30,730 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:30,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:30,731 INFO L85 PathProgramCache]: Analyzing trace with hash 4532533, now seen corresponding path program 2 times [2024-11-18 09:35:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:30,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162035528] [2024-11-18 09:35:30,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:30,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:30,838 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:30,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-18 09:35:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162035528] [2024-11-18 09:35:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162035528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943103252] [2024-11-18 09:35:31,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:31,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:31,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:31,119 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) [2024-11-18 09:35:31,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 09:35:32,076 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:32,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:32,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:35:32,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-18 09:35:32,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-18 09:35:32,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943103252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:32,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:32,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-18 09:35:32,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540399206] [2024-11-18 09:35:32,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:32,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 09:35:32,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:32,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 09:35:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:35:32,235 INFO L87 Difference]: Start difference. First operand 1738 states and 2207 transitions. Second operand has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:35:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:32,406 INFO L93 Difference]: Finished difference Result 3296 states and 4188 transitions. [2024-11-18 09:35:32,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:35:32,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 234 [2024-11-18 09:35:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:32,416 INFO L225 Difference]: With dead ends: 3296 [2024-11-18 09:35:32,416 INFO L226 Difference]: Without dead ends: 1771 [2024-11-18 09:35:32,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 460 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:35:32,424 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 72 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:32,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 622 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2024-11-18 09:35:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1771. [2024-11-18 09:35:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1685 states have (on average 1.2498516320474777) internal successors, (2106), 1720 states have internal predecessors, (2106), 73 states have call successors, (73), 12 states have call predecessors, (73), 12 states have return successors, (73), 44 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-18 09:35:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2252 transitions. [2024-11-18 09:35:32,468 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2252 transitions. Word has length 234 [2024-11-18 09:35:32,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:32,469 INFO L471 AbstractCegarLoop]: Abstraction has 1771 states and 2252 transitions. [2024-11-18 09:35:32,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:35:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2252 transitions. [2024-11-18 09:35:32,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 09:35:32,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:32,474 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:32,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 09:35:32,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:32,675 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:32,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash -613994955, now seen corresponding path program 3 times [2024-11-18 09:35:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:32,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731974617] [2024-11-18 09:35:32,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:35:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:32,784 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:35:32,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-11-18 09:35:33,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731974617] [2024-11-18 09:35:33,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731974617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:33,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850602225] [2024-11-18 09:35:33,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:35:33,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:33,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:33,567 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) [2024-11-18 09:35:33,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 09:35:34,494 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:35:34,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:34,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 09:35:34,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:34,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 209 [2024-11-18 09:35:34,755 INFO L349 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2024-11-18 09:35:34,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 241 treesize of output 331 [2024-11-18 09:35:34,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:35:34,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 82 [2024-11-18 09:35:34,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2024-11-18 09:35:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-11-18 09:35:34,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:34,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850602225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:34,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:34,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-11-18 09:35:34,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697296294] [2024-11-18 09:35:34,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:34,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:35:34,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:34,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:35:34,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:35:34,930 INFO L87 Difference]: Start difference. First operand 1771 states and 2252 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:36,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:36,369 INFO L93 Difference]: Finished difference Result 3107 states and 3940 transitions. [2024-11-18 09:35:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:35:36,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 243 [2024-11-18 09:35:36,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:36,376 INFO L225 Difference]: With dead ends: 3107 [2024-11-18 09:35:36,377 INFO L226 Difference]: Without dead ends: 1862 [2024-11-18 09:35:36,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:35:36,381 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 76 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:36,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1429 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 09:35:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2024-11-18 09:35:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1839. [2024-11-18 09:35:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1746 states have (on average 1.2502863688430699) internal successors, (2183), 1781 states have internal predecessors, (2183), 80 states have call successors, (80), 12 states have call predecessors, (80), 12 states have return successors, (80), 51 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 09:35:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2343 transitions. [2024-11-18 09:35:36,432 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2343 transitions. Word has length 243 [2024-11-18 09:35:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:36,432 INFO L471 AbstractCegarLoop]: Abstraction has 1839 states and 2343 transitions. [2024-11-18 09:35:36,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2343 transitions. [2024-11-18 09:35:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 09:35:36,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:36,437 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:36,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 09:35:36,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:36,638 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:36,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1207961611, now seen corresponding path program 4 times [2024-11-18 09:35:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:36,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938545453] [2024-11-18 09:35:36,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:35:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:36,748 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:35:36,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-18 09:35:36,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:36,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938545453] [2024-11-18 09:35:36,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938545453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:36,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579159323] [2024-11-18 09:35:36,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:35:36,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:36,974 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:36,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 09:35:48,922 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:35:48,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:48,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:35:48,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-18 09:35:49,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-18 09:35:49,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579159323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:49,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:49,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:35:49,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544360633] [2024-11-18 09:35:49,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:49,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:35:49,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:35:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:35:49,202 INFO L87 Difference]: Start difference. First operand 1839 states and 2343 transitions. Second operand has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:49,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:49,548 INFO L93 Difference]: Finished difference Result 9268 states and 11697 transitions. [2024-11-18 09:35:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:35:49,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 243 [2024-11-18 09:35:49,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:49,566 INFO L225 Difference]: With dead ends: 9268 [2024-11-18 09:35:49,567 INFO L226 Difference]: Without dead ends: 9262 [2024-11-18 09:35:49,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:35:49,572 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 368 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:49,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1023 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:35:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2024-11-18 09:35:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 7359. [2024-11-18 09:35:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7359 states, 7266 states have (on average 1.265345444536196) internal successors, (9194), 7301 states have internal predecessors, (9194), 80 states have call successors, (80), 12 states have call predecessors, (80), 12 states have return successors, (80), 51 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 09:35:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7359 states to 7359 states and 9354 transitions. [2024-11-18 09:35:49,724 INFO L78 Accepts]: Start accepts. Automaton has 7359 states and 9354 transitions. Word has length 243 [2024-11-18 09:35:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:49,726 INFO L471 AbstractCegarLoop]: Abstraction has 7359 states and 9354 transitions. [2024-11-18 09:35:49,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 7359 states and 9354 transitions. [2024-11-18 09:35:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-18 09:35:49,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:49,742 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:49,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:49,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:49,943 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:49,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash -762793601, now seen corresponding path program 5 times [2024-11-18 09:35:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322144651] [2024-11-18 09:35:49,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:35:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:50,038 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 09:35:50,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-18 09:35:50,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322144651] [2024-11-18 09:35:50,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322144651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685776399] [2024-11-18 09:35:50,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:35:50,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:50,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:50,101 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:50,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 09:35:50,804 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 09:35:50,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:50,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 09:35:50,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-18 09:35:50,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-18 09:35:50,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685776399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:50,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:50,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-18 09:35:50,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491946402] [2024-11-18 09:35:50,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:50,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:35:50,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:35:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:35:50,941 INFO L87 Difference]: Start difference. First operand 7359 states and 9354 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:51,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:51,067 INFO L93 Difference]: Finished difference Result 10147 states and 12878 transitions. [2024-11-18 09:35:51,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:35:51,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 293 [2024-11-18 09:35:51,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:51,081 INFO L225 Difference]: With dead ends: 10147 [2024-11-18 09:35:51,081 INFO L226 Difference]: Without dead ends: 7406 [2024-11-18 09:35:51,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 584 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:35:51,088 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 78 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:51,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 709 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:51,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7406 states. [2024-11-18 09:35:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7406 to 7269. [2024-11-18 09:35:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7269 states, 7176 states have (on average 1.2561315496098104) internal successors, (9014), 7211 states have internal predecessors, (9014), 80 states have call successors, (80), 12 states have call predecessors, (80), 12 states have return successors, (80), 51 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 09:35:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 9174 transitions. [2024-11-18 09:35:51,255 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 9174 transitions. Word has length 293 [2024-11-18 09:35:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:51,255 INFO L471 AbstractCegarLoop]: Abstraction has 7269 states and 9174 transitions. [2024-11-18 09:35:51,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 9174 transitions. [2024-11-18 09:35:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-18 09:35:51,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:51,269 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:51,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-18 09:35:51,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:51,470 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:51,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash 938162935, now seen corresponding path program 6 times [2024-11-18 09:35:51,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:51,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770703074] [2024-11-18 09:35:51,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:35:51,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:51,589 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 09:35:51,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-18 09:35:52,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770703074] [2024-11-18 09:35:52,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770703074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007741756] [2024-11-18 09:35:52,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:35:52,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:52,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:52,193 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:52,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 09:35:53,397 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 09:35:53,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:53,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 09:35:53,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:53,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:35:53,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 170 treesize of output 154 [2024-11-18 09:35:53,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 174 [2024-11-18 09:35:53,604 INFO L349 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2024-11-18 09:35:53,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 323 [2024-11-18 09:35:53,672 INFO L349 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2024-11-18 09:35:53,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 225 treesize of output 89 [2024-11-18 09:35:53,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2024-11-18 09:35:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-18 09:35:53,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007741756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:53,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:53,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-11-18 09:35:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877119401] [2024-11-18 09:35:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:53,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:35:53,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:35:53,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:35:53,770 INFO L87 Difference]: Start difference. First operand 7269 states and 9174 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:54,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:54,985 INFO L93 Difference]: Finished difference Result 14071 states and 17742 transitions. [2024-11-18 09:35:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:35:54,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 323 [2024-11-18 09:35:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:54,999 INFO L225 Difference]: With dead ends: 14071 [2024-11-18 09:35:54,999 INFO L226 Difference]: Without dead ends: 7396 [2024-11-18 09:35:55,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:35:55,010 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 76 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:55,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1396 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:35:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2024-11-18 09:35:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 7322. [2024-11-18 09:35:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7322 states, 7224 states have (on average 1.2563676633444076) internal successors, (9076), 7261 states have internal predecessors, (9076), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 54 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 09:35:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 9246 transitions. [2024-11-18 09:35:55,142 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 9246 transitions. Word has length 323 [2024-11-18 09:35:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:55,142 INFO L471 AbstractCegarLoop]: Abstraction has 7322 states and 9246 transitions. [2024-11-18 09:35:55,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 9246 transitions. [2024-11-18 09:35:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-18 09:35:55,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:55,156 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:55,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-18 09:35:55,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-18 09:35:55,357 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:55,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1359818027, now seen corresponding path program 1 times [2024-11-18 09:35:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:55,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059449419] [2024-11-18 09:35:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 392 proven. 16 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-18 09:35:55,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:55,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059449419] [2024-11-18 09:35:55,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059449419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850549020] [2024-11-18 09:35:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:55,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:55,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:55,746 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:55,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 09:35:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:56,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:35:56,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 384 proven. 57 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-11-18 09:35:56,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 384 proven. 57 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-11-18 09:35:56,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850549020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:56,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:56,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2024-11-18 09:35:56,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604808698] [2024-11-18 09:35:56,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:56,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:35:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:35:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:35:56,975 INFO L87 Difference]: Start difference. First operand 7322 states and 9246 transitions. Second operand has 13 states, 13 states have (on average 25.384615384615383) internal successors, (330), 13 states have internal predecessors, (330), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:57,505 INFO L93 Difference]: Finished difference Result 12467 states and 15711 transitions. [2024-11-18 09:35:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:35:57,506 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.384615384615383) internal successors, (330), 13 states have internal predecessors, (330), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 325 [2024-11-18 09:35:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:57,526 INFO L225 Difference]: With dead ends: 12467 [2024-11-18 09:35:57,526 INFO L226 Difference]: Without dead ends: 9758 [2024-11-18 09:35:57,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 648 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=388, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:35:57,536 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 268 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:57,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1767 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:35:57,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9758 states. [2024-11-18 09:35:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 7278. [2024-11-18 09:35:57,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7278 states, 7180 states have (on average 1.2518105849582173) internal successors, (8988), 7217 states have internal predecessors, (8988), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 54 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 09:35:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 9158 transitions. [2024-11-18 09:35:57,685 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 9158 transitions. Word has length 325 [2024-11-18 09:35:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:57,685 INFO L471 AbstractCegarLoop]: Abstraction has 7278 states and 9158 transitions. [2024-11-18 09:35:57,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.384615384615383) internal successors, (330), 13 states have internal predecessors, (330), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 9158 transitions. [2024-11-18 09:35:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-18 09:35:57,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:57,701 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:57,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:57,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-18 09:35:57,902 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:57,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1599607161, now seen corresponding path program 2 times [2024-11-18 09:35:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934668122] [2024-11-18 09:35:57,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:58,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:58,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2024-11-18 09:35:58,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:58,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934668122] [2024-11-18 09:35:58,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934668122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:58,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765997762] [2024-11-18 09:35:58,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:58,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:58,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:58,227 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:58,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 09:35:59,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:59,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:59,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:59,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2024-11-18 09:35:59,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2024-11-18 09:35:59,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765997762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:59,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 09:35:59,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181393045] [2024-11-18 09:35:59,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:59,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 09:35:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:59,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 09:35:59,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:59,426 INFO L87 Difference]: Start difference. First operand 7278 states and 9158 transitions. Second operand has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:59,648 INFO L93 Difference]: Finished difference Result 13071 states and 16409 transitions. [2024-11-18 09:35:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:35:59,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 365 [2024-11-18 09:35:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:59,666 INFO L225 Difference]: With dead ends: 13071 [2024-11-18 09:35:59,666 INFO L226 Difference]: Without dead ends: 10436 [2024-11-18 09:35:59,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 726 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:35:59,673 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 126 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:59,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 786 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10436 states. [2024-11-18 09:35:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10436 to 7238. [2024-11-18 09:35:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7238 states, 7140 states have (on average 1.2476190476190476) internal successors, (8908), 7177 states have internal predecessors, (8908), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 54 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 09:35:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 9078 transitions. [2024-11-18 09:35:59,824 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 9078 transitions. Word has length 365 [2024-11-18 09:35:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:59,824 INFO L471 AbstractCegarLoop]: Abstraction has 7238 states and 9078 transitions. [2024-11-18 09:35:59,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 9078 transitions. [2024-11-18 09:35:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-18 09:35:59,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:59,834 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:59,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-18 09:36:00,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:00,035 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:00,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash 844216267, now seen corresponding path program 1 times [2024-11-18 09:36:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982662465] [2024-11-18 09:36:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2024-11-18 09:36:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:00,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982662465] [2024-11-18 09:36:00,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982662465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:00,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:00,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:36:00,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025165250] [2024-11-18 09:36:00,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:00,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:36:00,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:00,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:36:00,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:36:00,941 INFO L87 Difference]: Start difference. First operand 7238 states and 9078 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:01,195 INFO L93 Difference]: Finished difference Result 15571 states and 19241 transitions. [2024-11-18 09:36:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:36:01,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 395 [2024-11-18 09:36:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:01,212 INFO L225 Difference]: With dead ends: 15571 [2024-11-18 09:36:01,212 INFO L226 Difference]: Without dead ends: 9478 [2024-11-18 09:36:01,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:36:01,223 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 56 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:01,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 931 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:36:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9478 states. [2024-11-18 09:36:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9478 to 8094. [2024-11-18 09:36:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8094 states, 7996 states have (on average 1.247623811905953) internal successors, (9976), 8033 states have internal predecessors, (9976), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 54 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 09:36:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8094 states to 8094 states and 10146 transitions. [2024-11-18 09:36:01,365 INFO L78 Accepts]: Start accepts. Automaton has 8094 states and 10146 transitions. Word has length 395 [2024-11-18 09:36:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:01,365 INFO L471 AbstractCegarLoop]: Abstraction has 8094 states and 10146 transitions. [2024-11-18 09:36:01,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 8094 states and 10146 transitions. [2024-11-18 09:36:01,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-18 09:36:01,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:01,378 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:01,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-18 09:36:01,378 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:01,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash 906439917, now seen corresponding path program 2 times [2024-11-18 09:36:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:01,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162939410] [2024-11-18 09:36:01,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:36:01,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:01,521 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:36:01,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:36:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2024-11-18 09:36:02,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162939410] [2024-11-18 09:36:02,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162939410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:02,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:02,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:36:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449576280] [2024-11-18 09:36:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:02,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:36:02,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:02,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:36:02,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:36:02,162 INFO L87 Difference]: Start difference. First operand 8094 states and 10146 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:02,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:02,369 INFO L93 Difference]: Finished difference Result 16426 states and 20356 transitions. [2024-11-18 09:36:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:36:02,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 395 [2024-11-18 09:36:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:02,388 INFO L225 Difference]: With dead ends: 16426 [2024-11-18 09:36:02,388 INFO L226 Difference]: Without dead ends: 9637 [2024-11-18 09:36:02,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:36:02,401 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 20 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:02,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 967 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:36:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9637 states. [2024-11-18 09:36:02,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9637 to 8886. [2024-11-18 09:36:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8886 states, 8788 states have (on average 1.2339553937187073) internal successors, (10844), 8825 states have internal predecessors, (10844), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 54 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 09:36:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8886 states to 8886 states and 11014 transitions. [2024-11-18 09:36:02,553 INFO L78 Accepts]: Start accepts. Automaton has 8886 states and 11014 transitions. Word has length 395 [2024-11-18 09:36:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:02,554 INFO L471 AbstractCegarLoop]: Abstraction has 8886 states and 11014 transitions. [2024-11-18 09:36:02,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 8886 states and 11014 transitions. [2024-11-18 09:36:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-18 09:36:02,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:02,566 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:02,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-18 09:36:02,566 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:02,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash 165161969, now seen corresponding path program 3 times [2024-11-18 09:36:02,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:02,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910987027] [2024-11-18 09:36:02,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:36:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:02,851 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:36:02,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:36:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-18 09:36:03,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:03,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910987027] [2024-11-18 09:36:03,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910987027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:03,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:03,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:36:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622983723] [2024-11-18 09:36:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:03,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:36:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:36:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:36:03,647 INFO L87 Difference]: Start difference. First operand 8886 states and 11014 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 09:36:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:04,791 INFO L93 Difference]: Finished difference Result 17403 states and 21529 transitions. [2024-11-18 09:36:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:36:04,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 395 [2024-11-18 09:36:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:04,804 INFO L225 Difference]: With dead ends: 17403 [2024-11-18 09:36:04,804 INFO L226 Difference]: Without dead ends: 9164 [2024-11-18 09:36:04,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:36:04,817 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 163 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:04,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 959 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:36:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2024-11-18 09:36:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 9074. [2024-11-18 09:36:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9074 states, 8951 states have (on average 1.2339403418612445) internal successors, (11045), 9000 states have internal predecessors, (11045), 110 states have call successors, (110), 12 states have call predecessors, (110), 12 states have return successors, (110), 69 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-18 09:36:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9074 states to 9074 states and 11265 transitions. [2024-11-18 09:36:04,975 INFO L78 Accepts]: Start accepts. Automaton has 9074 states and 11265 transitions. Word has length 395 [2024-11-18 09:36:04,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:04,975 INFO L471 AbstractCegarLoop]: Abstraction has 9074 states and 11265 transitions. [2024-11-18 09:36:04,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 09:36:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 9074 states and 11265 transitions. [2024-11-18 09:36:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-18 09:36:04,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:04,988 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:04,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-18 09:36:04,988 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:04,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:04,989 INFO L85 PathProgramCache]: Analyzing trace with hash -484905987, now seen corresponding path program 1 times [2024-11-18 09:36:04,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:04,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789947369] [2024-11-18 09:36:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:04,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1150 trivial. 0 not checked. [2024-11-18 09:36:07,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:07,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789947369] [2024-11-18 09:36:07,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789947369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:07,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:07,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:36:07,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200368481] [2024-11-18 09:36:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:07,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:36:07,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:07,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:36:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:36:07,362 INFO L87 Difference]: Start difference. First operand 9074 states and 11265 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 09:36:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:08,026 INFO L93 Difference]: Finished difference Result 17614 states and 21814 transitions. [2024-11-18 09:36:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:36:08,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 400 [2024-11-18 09:36:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:08,040 INFO L225 Difference]: With dead ends: 17614 [2024-11-18 09:36:08,040 INFO L226 Difference]: Without dead ends: 9375 [2024-11-18 09:36:08,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:36:08,053 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 166 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:08,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 953 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:36:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9375 states. [2024-11-18 09:36:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9375 to 9261. [2024-11-18 09:36:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9261 states, 9115 states have (on average 1.2348875479978059) internal successors, (11256), 9172 states have internal predecessors, (11256), 133 states have call successors, (133), 12 states have call predecessors, (133), 12 states have return successors, (133), 88 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 09:36:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9261 states to 9261 states and 11522 transitions. [2024-11-18 09:36:08,265 INFO L78 Accepts]: Start accepts. Automaton has 9261 states and 11522 transitions. Word has length 400 [2024-11-18 09:36:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:08,267 INFO L471 AbstractCegarLoop]: Abstraction has 9261 states and 11522 transitions. [2024-11-18 09:36:08,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 09:36:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9261 states and 11522 transitions. [2024-11-18 09:36:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-18 09:36:08,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:08,280 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:08,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-18 09:36:08,280 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:08,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash 328850310, now seen corresponding path program 1 times [2024-11-18 09:36:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:08,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663748248] [2024-11-18 09:36:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-18 09:36:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663748248] [2024-11-18 09:36:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663748248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:36:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241655293] [2024-11-18 09:36:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:10,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:10,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:36:10,163 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:36:10,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 09:36:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:11,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 09:36:11,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:36:11,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 206