./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../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-803cd42-m [2024-11-21 21:16:35,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 21:16:35,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 21:16:35,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 21:16:35,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 21:16:35,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 21:16:35,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 21:16:35,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 21:16:35,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 21:16:35,564 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 21:16:35,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 21:16:35,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 21:16:35,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 21:16:35,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 21:16:35,566 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 21:16:35,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 21:16:35,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 21:16:35,566 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 21:16:35,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 21:16:35,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 21:16:35,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 21:16:35,571 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 21:16:35,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 21:16:35,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 21:16:35,572 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 21:16:35,572 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 21:16:35,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 21:16:35,574 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 21:16:35,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 21:16:35,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 21:16:35,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 21:16:35,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 21:16:35,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:16:35,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 21:16:35,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 21:16:35,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 21:16:35,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 21:16:35,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 21:16:35,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 21:16:35,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 21:16:35,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 21:16:35,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 21:16:35,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 [2024-11-21 21:16:35,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 21:16:35,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 21:16:35,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 21:16:35,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 21:16:35,897 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 21:16:35,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-model/2SB.i [2024-11-21 21:16:37,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 21:16:37,536 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 21:16:37,540 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i [2024-11-21 21:16:37,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f4af520b/ee116dcabda34af39c286d170d2eff36/FLAG2ce12235b [2024-11-21 21:16:37,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f4af520b/ee116dcabda34af39c286d170d2eff36 [2024-11-21 21:16:37,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 21:16:37,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 21:16:37,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 21:16:37,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 21:16:37,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 21:16:37,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:16:37" (1/1) ... [2024-11-21 21:16:37,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76375de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:37, skipping insertion in model container [2024-11-21 21:16:37,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:16:37" (1/1) ... [2024-11-21 21:16:37,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 21:16:38,236 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] [2024-11-21 21:16:38,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:16:38,252 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 21:16:38,344 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] [2024-11-21 21:16:38,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:16:38,362 INFO L204 MainTranslator]: Completed translation [2024-11-21 21:16:38,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38 WrapperNode [2024-11-21 21:16:38,363 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 21:16:38,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 21:16:38,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 21:16:38,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 21:16:38,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,442 INFO L138 Inliner]: procedures = 27, calls = 414, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 928 [2024-11-21 21:16:38,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 21:16:38,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 21:16:38,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 21:16:38,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 21:16:38,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,501 INFO L175 MemorySlicer]: Split 310 memory accesses to 14 slices as follows [10, 10, 48, 13, 15, 11, 12, 13, 3, 40, 10, 12, 76, 37]. 25 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [0, 0, 0, 5, 0, 0, 5, 5, 0, 0, 1, 10, 0, 0]. The 117 writes are split as follows [5, 5, 10, 2, 5, 5, 2, 2, 2, 20, 3, 1, 40, 15]. [2024-11-21 21:16:38,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 21:16:38,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 21:16:38,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 21:16:38,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 21:16:38,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (1/1) ... [2024-11-21 21:16:38,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:16:38,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:38,622 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) [2024-11-21 21:16:38,626 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 [2024-11-21 21:16:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-21 21:16:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-21 21:16:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-21 21:16:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-21 21:16:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-21 21:16:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-21 21:16:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-21 21:16:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-21 21:16:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2024-11-21 21:16:38,679 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 21:16:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 21:16:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 21:16:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-21 21:16:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-21 21:16:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-21 21:16:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-21 21:16:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-21 21:16:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-21 21:16:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-21 21:16:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-21 21:16:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-21 21:16:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-21 21:16:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-21 21:16:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-21 21:16:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-21 21:16:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-21 21:16:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-21 21:16:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 21:16:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 21:16:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 21:16:38,892 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 21:16:38,893 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 21:16:39,755 INFO L? ?]: Removed 146 outVars from TransFormulas that were not future-live. [2024-11-21 21:16:39,756 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 21:16:39,780 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 21:16:39,781 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-21 21:16:39,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:16:39 BoogieIcfgContainer [2024-11-21 21:16:39,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 21:16:39,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 21:16:39,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 21:16:39,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 21:16:39,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:16:37" (1/3) ... [2024-11-21 21:16:39,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ce3bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:16:39, skipping insertion in model container [2024-11-21 21:16:39,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:38" (2/3) ... [2024-11-21 21:16:39,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ce3bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:16:39, skipping insertion in model container [2024-11-21 21:16:39,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:16:39" (3/3) ... [2024-11-21 21:16:39,794 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2024-11-21 21:16:39,811 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 21:16:39,812 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 21:16:39,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 21:16:39,884 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;@3f8a6aff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 21:16:39,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 21:16:39,889 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) [2024-11-21 21:16:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-21 21:16:39,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:39,902 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] [2024-11-21 21:16:39,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:39,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:39,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1488850041, now seen corresponding path program 1 times [2024-11-21 21:16:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:39,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310288551] [2024-11-21 21:16:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:39,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:40,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-21 21:16:40,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:40,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310288551] [2024-11-21 21:16:40,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310288551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:40,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:16:40,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:16:40,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41231994] [2024-11-21 21:16:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:40,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:40,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:40,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:16:40,425 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) [2024-11-21 21:16:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:40,503 INFO L93 Difference]: Finished difference Result 346 states and 522 transitions. [2024-11-21 21:16:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:40,507 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 [2024-11-21 21:16:40,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:40,532 INFO L225 Difference]: With dead ends: 346 [2024-11-21 21:16:40,532 INFO L226 Difference]: Without dead ends: 165 [2024-11-21 21:16:40,539 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 [2024-11-21 21:16:40,549 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 [2024-11-21 21:16:40,552 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] [2024-11-21 21:16:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-21 21:16:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2024-11-21 21:16:40,630 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) [2024-11-21 21:16:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2024-11-21 21:16:40,653 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 48 [2024-11-21 21:16:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:40,653 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2024-11-21 21:16:40,654 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) [2024-11-21 21:16:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2024-11-21 21:16:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-21 21:16:40,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:40,660 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] [2024-11-21 21:16:40,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 21:16:40,661 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:40,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:40,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1059278353, now seen corresponding path program 1 times [2024-11-21 21:16:40,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878580356] [2024-11-21 21:16:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-21 21:16:40,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:40,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878580356] [2024-11-21 21:16:40,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878580356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:40,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594684883] [2024-11-21 21:16:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:40,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:40,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:40,868 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) [2024-11-21 21:16:40,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 21:16:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:41,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:41,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-21 21:16:41,212 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:41,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594684883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:41,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:41,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137953823] [2024-11-21 21:16:41,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:41,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:41,216 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) [2024-11-21 21:16:41,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:41,247 INFO L93 Difference]: Finished difference Result 322 states and 417 transitions. [2024-11-21 21:16:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:41,248 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 [2024-11-21 21:16:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:41,249 INFO L225 Difference]: With dead ends: 322 [2024-11-21 21:16:41,249 INFO L226 Difference]: Without dead ends: 166 [2024-11-21 21:16:41,250 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 [2024-11-21 21:16:41,252 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 [2024-11-21 21:16:41,252 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] [2024-11-21 21:16:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-21 21:16:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2024-11-21 21:16:41,267 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) [2024-11-21 21:16:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 212 transitions. [2024-11-21 21:16:41,269 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 212 transitions. Word has length 51 [2024-11-21 21:16:41,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:41,270 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 212 transitions. [2024-11-21 21:16:41,270 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) [2024-11-21 21:16:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 212 transitions. [2024-11-21 21:16:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-21 21:16:41,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:41,272 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] [2024-11-21 21:16:41,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 21:16:41,473 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 [2024-11-21 21:16:41,474 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:41,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash -384397005, now seen corresponding path program 1 times [2024-11-21 21:16:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770590637] [2024-11-21 21:16:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:41,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-21 21:16:41,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:41,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770590637] [2024-11-21 21:16:41,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770590637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:41,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256553439] [2024-11-21 21:16:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:41,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:41,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:41,698 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) [2024-11-21 21:16:41,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 21:16:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:41,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:41,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-21 21:16:41,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:41,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256553439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:41,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:41,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:41,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011509315] [2024-11-21 21:16:41,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:41,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:41,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:41,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:41,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:41,980 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) [2024-11-21 21:16:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:42,024 INFO L93 Difference]: Finished difference Result 311 states and 401 transitions. [2024-11-21 21:16:42,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:42,027 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 [2024-11-21 21:16:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:42,029 INFO L225 Difference]: With dead ends: 311 [2024-11-21 21:16:42,029 INFO L226 Difference]: Without dead ends: 172 [2024-11-21 21:16:42,030 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 [2024-11-21 21:16:42,033 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 [2024-11-21 21:16:42,034 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] [2024-11-21 21:16:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-21 21:16:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2024-11-21 21:16:42,048 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) [2024-11-21 21:16:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2024-11-21 21:16:42,050 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 55 [2024-11-21 21:16:42,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:42,050 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2024-11-21 21:16:42,051 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) [2024-11-21 21:16:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2024-11-21 21:16:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-21 21:16:42,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:42,054 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] [2024-11-21 21:16:42,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 21:16:42,254 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 [2024-11-21 21:16:42,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:42,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1023059147, now seen corresponding path program 1 times [2024-11-21 21:16:42,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030728569] [2024-11-21 21:16:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:42,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 21:16:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:42,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030728569] [2024-11-21 21:16:42,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030728569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:42,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905906680] [2024-11-21 21:16:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:42,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:42,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:42,450 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) [2024-11-21 21:16:42,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 21:16:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:42,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:42,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 21:16:42,731 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:42,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905906680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:42,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:42,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:42,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342532059] [2024-11-21 21:16:42,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:42,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:42,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:42,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:42,734 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) [2024-11-21 21:16:42,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:42,772 INFO L93 Difference]: Finished difference Result 300 states and 388 transitions. [2024-11-21 21:16:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:42,775 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 [2024-11-21 21:16:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:42,777 INFO L225 Difference]: With dead ends: 300 [2024-11-21 21:16:42,779 INFO L226 Difference]: Without dead ends: 173 [2024-11-21 21:16:42,780 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 [2024-11-21 21:16:42,781 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 [2024-11-21 21:16:42,784 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] [2024-11-21 21:16:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-21 21:16:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-11-21 21:16:42,802 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) [2024-11-21 21:16:42,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 214 transitions. [2024-11-21 21:16:42,806 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 214 transitions. Word has length 58 [2024-11-21 21:16:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:42,807 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 214 transitions. [2024-11-21 21:16:42,808 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) [2024-11-21 21:16:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 214 transitions. [2024-11-21 21:16:42,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-21 21:16:42,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:42,814 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] [2024-11-21 21:16:42,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 21:16:43,015 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 [2024-11-21 21:16:43,016 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:43,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:43,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1869838307, now seen corresponding path program 1 times [2024-11-21 21:16:43,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:43,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929313489] [2024-11-21 21:16:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:43,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 21:16:43,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929313489] [2024-11-21 21:16:43,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929313489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:43,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761825285] [2024-11-21 21:16:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:43,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:43,203 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) [2024-11-21 21:16:43,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 21:16:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:43,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:43,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 21:16:43,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:43,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761825285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:43,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:43,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:43,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958461933] [2024-11-21 21:16:43,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:43,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:43,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:43,470 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) [2024-11-21 21:16:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:43,546 INFO L93 Difference]: Finished difference Result 203 states and 269 transitions. [2024-11-21 21:16:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:43,546 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 [2024-11-21 21:16:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:43,549 INFO L225 Difference]: With dead ends: 203 [2024-11-21 21:16:43,550 INFO L226 Difference]: Without dead ends: 197 [2024-11-21 21:16:43,550 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 [2024-11-21 21:16:43,551 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 [2024-11-21 21:16:43,552 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] [2024-11-21 21:16:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-21 21:16:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2024-11-21 21:16:43,562 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) [2024-11-21 21:16:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 215 transitions. [2024-11-21 21:16:43,563 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 215 transitions. Word has length 61 [2024-11-21 21:16:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:43,564 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 215 transitions. [2024-11-21 21:16:43,564 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) [2024-11-21 21:16:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 215 transitions. [2024-11-21 21:16:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-21 21:16:43,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:43,567 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] [2024-11-21 21:16:43,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 21:16:43,767 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 [2024-11-21 21:16:43,768 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:43,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash -43287961, now seen corresponding path program 1 times [2024-11-21 21:16:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848365036] [2024-11-21 21:16:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 21:16:43,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:43,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848365036] [2024-11-21 21:16:43,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848365036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231840024] [2024-11-21 21:16:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:43,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:43,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:43,981 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) [2024-11-21 21:16:43,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 21:16:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:44,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:44,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 21:16:44,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231840024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401756990] [2024-11-21 21:16:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:44,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:44,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:44,258 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) [2024-11-21 21:16:44,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:44,272 INFO L93 Difference]: Finished difference Result 205 states and 272 transitions. [2024-11-21 21:16:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:44,273 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 [2024-11-21 21:16:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:44,275 INFO L225 Difference]: With dead ends: 205 [2024-11-21 21:16:44,275 INFO L226 Difference]: Without dead ends: 169 [2024-11-21 21:16:44,276 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 [2024-11-21 21:16:44,277 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 [2024-11-21 21:16:44,278 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] [2024-11-21 21:16:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-21 21:16:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-21 21:16:44,290 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) [2024-11-21 21:16:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2024-11-21 21:16:44,291 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 71 [2024-11-21 21:16:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:44,296 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2024-11-21 21:16:44,296 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) [2024-11-21 21:16:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2024-11-21 21:16:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-21 21:16:44,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:44,298 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] [2024-11-21 21:16:44,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 21:16:44,498 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 [2024-11-21 21:16:44,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:44,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:44,499 INFO L85 PathProgramCache]: Analyzing trace with hash -723346331, now seen corresponding path program 1 times [2024-11-21 21:16:44,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:44,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116764199] [2024-11-21 21:16:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:44,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 21:16:44,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116764199] [2024-11-21 21:16:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116764199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150584374] [2024-11-21 21:16:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:44,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:44,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:44,614 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) [2024-11-21 21:16:44,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 21:16:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:44,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:16:44,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-21 21:16:44,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:44,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150584374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:44,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:44,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:44,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911737288] [2024-11-21 21:16:44,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:44,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:44,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:44,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:44,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:44,920 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) [2024-11-21 21:16:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:44,931 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-11-21 21:16:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:44,932 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 [2024-11-21 21:16:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:44,933 INFO L225 Difference]: With dead ends: 206 [2024-11-21 21:16:44,933 INFO L226 Difference]: Without dead ends: 200 [2024-11-21 21:16:44,934 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 [2024-11-21 21:16:44,934 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 [2024-11-21 21:16:44,934 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] [2024-11-21 21:16:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-21 21:16:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2024-11-21 21:16:44,942 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) [2024-11-21 21:16:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2024-11-21 21:16:44,944 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 71 [2024-11-21 21:16:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:44,944 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2024-11-21 21:16:44,944 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) [2024-11-21 21:16:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2024-11-21 21:16:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-21 21:16:44,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:44,946 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] [2024-11-21 21:16:44,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 21:16:45,146 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 [2024-11-21 21:16:45,147 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:45,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash -602784093, now seen corresponding path program 1 times [2024-11-21 21:16:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:45,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093819995] [2024-11-21 21:16:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 21:16:45,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:45,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093819995] [2024-11-21 21:16:45,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093819995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:45,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598566368] [2024-11-21 21:16:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:45,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:45,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:45,289 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) [2024-11-21 21:16:45,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 21:16:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:45,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:16:45,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-21 21:16:45,629 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:45,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598566368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:45,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:45,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:45,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478886899] [2024-11-21 21:16:45,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:45,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:45,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:45,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:45,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:45,631 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) [2024-11-21 21:16:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:45,644 INFO L93 Difference]: Finished difference Result 267 states and 369 transitions. [2024-11-21 21:16:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:45,645 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 [2024-11-21 21:16:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:45,646 INFO L225 Difference]: With dead ends: 267 [2024-11-21 21:16:45,646 INFO L226 Difference]: Without dead ends: 261 [2024-11-21 21:16:45,647 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 [2024-11-21 21:16:45,647 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 [2024-11-21 21:16:45,647 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] [2024-11-21 21:16:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-21 21:16:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-21 21:16:45,655 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) [2024-11-21 21:16:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 362 transitions. [2024-11-21 21:16:45,656 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 362 transitions. Word has length 85 [2024-11-21 21:16:45,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:45,657 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 362 transitions. [2024-11-21 21:16:45,657 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) [2024-11-21 21:16:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 362 transitions. [2024-11-21 21:16:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-21 21:16:45,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:45,659 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] [2024-11-21 21:16:45,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-21 21:16:45,859 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 [2024-11-21 21:16:45,860 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:45,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2050220215, now seen corresponding path program 1 times [2024-11-21 21:16:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342068713] [2024-11-21 21:16:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:45,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-21 21:16:46,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:46,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342068713] [2024-11-21 21:16:46,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342068713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:46,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413837631] [2024-11-21 21:16:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:46,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:46,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:46,016 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) [2024-11-21 21:16:46,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 21:16:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:46,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:16:46,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-21 21:16:46,385 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:46,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413837631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:46,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:46,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:46,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944911322] [2024-11-21 21:16:46,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:46,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:46,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:46,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:46,387 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) [2024-11-21 21:16:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:46,400 INFO L93 Difference]: Finished difference Result 391 states and 565 transitions. [2024-11-21 21:16:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:46,401 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 [2024-11-21 21:16:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:46,403 INFO L225 Difference]: With dead ends: 391 [2024-11-21 21:16:46,403 INFO L226 Difference]: Without dead ends: 385 [2024-11-21 21:16:46,404 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 [2024-11-21 21:16:46,404 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 [2024-11-21 21:16:46,404 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] [2024-11-21 21:16:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-21 21:16:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2024-11-21 21:16:46,413 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) [2024-11-21 21:16:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 558 transitions. [2024-11-21 21:16:46,415 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 558 transitions. Word has length 101 [2024-11-21 21:16:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:46,416 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 558 transitions. [2024-11-21 21:16:46,416 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) [2024-11-21 21:16:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 558 transitions. [2024-11-21 21:16:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-21 21:16:46,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:46,418 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] [2024-11-21 21:16:46,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 21:16:46,618 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 [2024-11-21 21:16:46,619 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:46,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1515910087, now seen corresponding path program 1 times [2024-11-21 21:16:46,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:46,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231674314] [2024-11-21 21:16:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-21 21:16:46,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:46,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231674314] [2024-11-21 21:16:46,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231674314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:46,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342653128] [2024-11-21 21:16:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:46,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:46,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:46,758 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) [2024-11-21 21:16:46,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 21:16:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:47,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:16:47,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-21 21:16:47,161 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:47,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342653128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:47,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:47,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923179765] [2024-11-21 21:16:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:47,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:47,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:47,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:47,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:47,163 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) [2024-11-21 21:16:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:47,180 INFO L93 Difference]: Finished difference Result 639 states and 957 transitions. [2024-11-21 21:16:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:47,180 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 [2024-11-21 21:16:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:47,183 INFO L225 Difference]: With dead ends: 639 [2024-11-21 21:16:47,184 INFO L226 Difference]: Without dead ends: 633 [2024-11-21 21:16:47,184 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 [2024-11-21 21:16:47,185 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 [2024-11-21 21:16:47,185 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] [2024-11-21 21:16:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-11-21 21:16:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2024-11-21 21:16:47,199 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) [2024-11-21 21:16:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 950 transitions. [2024-11-21 21:16:47,202 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 950 transitions. Word has length 111 [2024-11-21 21:16:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:47,202 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 950 transitions. [2024-11-21 21:16:47,203 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) [2024-11-21 21:16:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 950 transitions. [2024-11-21 21:16:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-21 21:16:47,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:47,205 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] [2024-11-21 21:16:47,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-21 21:16:47,405 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 [2024-11-21 21:16:47,406 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:47,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1155272663, now seen corresponding path program 1 times [2024-11-21 21:16:47,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:47,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983271272] [2024-11-21 21:16:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-21 21:16:47,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:47,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983271272] [2024-11-21 21:16:47,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983271272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:47,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510533177] [2024-11-21 21:16:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:47,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:47,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:47,568 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) [2024-11-21 21:16:47,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 21:16:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:47,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:16:47,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-21 21:16:47,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:16:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-21 21:16:48,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510533177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:16:48,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:16:48,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 21:16:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051063257] [2024-11-21 21:16:48,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:16:48,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 21:16:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:48,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 21:16:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:16:48,021 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) [2024-11-21 21:16:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:48,060 INFO L93 Difference]: Finished difference Result 1267 states and 1903 transitions. [2024-11-21 21:16:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 21:16:48,061 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 [2024-11-21 21:16:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:48,064 INFO L225 Difference]: With dead ends: 1267 [2024-11-21 21:16:48,064 INFO L226 Difference]: Without dead ends: 639 [2024-11-21 21:16:48,065 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 [2024-11-21 21:16:48,066 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 [2024-11-21 21:16:48,066 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] [2024-11-21 21:16:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2024-11-21 21:16:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2024-11-21 21:16:48,080 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) [2024-11-21 21:16:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 956 transitions. [2024-11-21 21:16:48,082 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 956 transitions. Word has length 141 [2024-11-21 21:16:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:48,082 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 956 transitions. [2024-11-21 21:16:48,083 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) [2024-11-21 21:16:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 956 transitions. [2024-11-21 21:16:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-21 21:16:48,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:48,086 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] [2024-11-21 21:16:48,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-21 21:16:48,286 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 [2024-11-21 21:16:48,287 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:48,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2129025981, now seen corresponding path program 2 times [2024-11-21 21:16:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:48,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078728865] [2024-11-21 21:16:48,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:16:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:48,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:16:48,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:16:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-21 21:16:48,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078728865] [2024-11-21 21:16:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078728865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:48,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767930605] [2024-11-21 21:16:48,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:16:48,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:48,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:48,488 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) [2024-11-21 21:16:48,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 21:16:49,367 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:16:49,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:16:49,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 21:16:49,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-21 21:16:49,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:16:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-21 21:16:49,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767930605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:16:49,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:16:49,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 13 [2024-11-21 21:16:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709796340] [2024-11-21 21:16:49,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:16:49,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 21:16:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:49,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 21:16:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-21 21:16:49,514 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) [2024-11-21 21:16:49,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:49,574 INFO L93 Difference]: Finished difference Result 1279 states and 1920 transitions. [2024-11-21 21:16:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-21 21:16:49,575 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 [2024-11-21 21:16:49,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:49,578 INFO L225 Difference]: With dead ends: 1279 [2024-11-21 21:16:49,578 INFO L226 Difference]: Without dead ends: 651 [2024-11-21 21:16:49,579 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 [2024-11-21 21:16:49,580 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 [2024-11-21 21:16:49,580 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] [2024-11-21 21:16:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-11-21 21:16:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2024-11-21 21:16:49,592 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) [2024-11-21 21:16:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 968 transitions. [2024-11-21 21:16:49,595 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 968 transitions. Word has length 147 [2024-11-21 21:16:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:49,595 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 968 transitions. [2024-11-21 21:16:49,595 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) [2024-11-21 21:16:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 968 transitions. [2024-11-21 21:16:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-21 21:16:49,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:49,597 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] [2024-11-21 21:16:49,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-21 21:16:49,798 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 [2024-11-21 21:16:49,798 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:49,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1964515491, now seen corresponding path program 3 times [2024-11-21 21:16:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:49,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440088932] [2024-11-21 21:16:49,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:16:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:49,881 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 21:16:49,882 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:16:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-21 21:16:50,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:50,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440088932] [2024-11-21 21:16:50,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440088932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:50,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:16:50,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-21 21:16:50,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493464676] [2024-11-21 21:16:50,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:50,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 21:16:50,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 21:16:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:16:50,334 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) [2024-11-21 21:16:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:51,367 INFO L93 Difference]: Finished difference Result 1233 states and 1863 transitions. [2024-11-21 21:16:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 21:16:51,367 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 [2024-11-21 21:16:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:51,370 INFO L225 Difference]: With dead ends: 1233 [2024-11-21 21:16:51,371 INFO L226 Difference]: Without dead ends: 724 [2024-11-21 21:16:51,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-21 21:16:51,372 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 182 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:16:51,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 969 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 21:16:51,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-21 21:16:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 692. [2024-11-21 21:16:51,387 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) [2024-11-21 21:16:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1023 transitions. [2024-11-21 21:16:51,390 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1023 transitions. Word has length 161 [2024-11-21 21:16:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:51,390 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1023 transitions. [2024-11-21 21:16:51,390 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) [2024-11-21 21:16:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1023 transitions. [2024-11-21 21:16:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-21 21:16:51,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:51,393 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] [2024-11-21 21:16:51,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 21:16:51,394 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:51,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:51,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1026283054, now seen corresponding path program 1 times [2024-11-21 21:16:51,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:51,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413548719] [2024-11-21 21:16:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:51,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-21 21:16:51,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:51,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413548719] [2024-11-21 21:16:51,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413548719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:51,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779423118] [2024-11-21 21:16:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:51,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:51,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:51,676 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) [2024-11-21 21:16:51,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-21 21:16:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:52,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:16:52,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-21 21:16:52,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:16:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-21 21:16:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779423118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:16:52,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:16:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 21:16:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736933206] [2024-11-21 21:16:52,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:16:52,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 21:16:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 21:16:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:16:52,199 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) [2024-11-21 21:16:52,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:52,271 INFO L93 Difference]: Finished difference Result 1360 states and 2024 transitions. [2024-11-21 21:16:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 21:16:52,272 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 [2024-11-21 21:16:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:52,275 INFO L225 Difference]: With dead ends: 1360 [2024-11-21 21:16:52,275 INFO L226 Difference]: Without dead ends: 713 [2024-11-21 21:16:52,276 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 [2024-11-21 21:16:52,277 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 24 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-11-21 21:16:52,277 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] [2024-11-21 21:16:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-21 21:16:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-21 21:16:52,294 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) [2024-11-21 21:16:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1050 transitions. [2024-11-21 21:16:52,297 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1050 transitions. Word has length 179 [2024-11-21 21:16:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:52,297 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1050 transitions. [2024-11-21 21:16:52,297 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) [2024-11-21 21:16:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1050 transitions. [2024-11-21 21:16:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-21 21:16:52,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:52,300 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] [2024-11-21 21:16:52,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-21 21:16:52,500 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 [2024-11-21 21:16:52,501 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:52,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash 763515522, now seen corresponding path program 2 times [2024-11-21 21:16:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342703277] [2024-11-21 21:16:52,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:16:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:52,586 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:16:52,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:16:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-21 21:16:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342703277] [2024-11-21 21:16:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342703277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498162689] [2024-11-21 21:16:52,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:16:52,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:52,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:52,758 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) [2024-11-21 21:16:52,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-21 21:16:53,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:16:53,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:16:53,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 21:16:53,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-21 21:16:53,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:16:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-21 21:16:53,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498162689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:16:53,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:16:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 13 [2024-11-21 21:16:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400768392] [2024-11-21 21:16:53,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:16:53,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 21:16:53,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 21:16:53,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-21 21:16:53,636 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) [2024-11-21 21:16:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:53,802 INFO L93 Difference]: Finished difference Result 1408 states and 2089 transitions. [2024-11-21 21:16:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-21 21:16:53,803 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 [2024-11-21 21:16:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:53,807 INFO L225 Difference]: With dead ends: 1408 [2024-11-21 21:16:53,807 INFO L226 Difference]: Without dead ends: 761 [2024-11-21 21:16:53,808 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 [2024-11-21 21:16:53,808 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 [2024-11-21 21:16:53,809 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] [2024-11-21 21:16:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-21 21:16:53,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 755. [2024-11-21 21:16:53,827 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) [2024-11-21 21:16:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1104 transitions. [2024-11-21 21:16:53,830 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1104 transitions. Word has length 188 [2024-11-21 21:16:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:53,830 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 1104 transitions. [2024-11-21 21:16:53,831 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) [2024-11-21 21:16:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1104 transitions. [2024-11-21 21:16:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-21 21:16:53,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:53,834 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] [2024-11-21 21:16:53,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-21 21:16:54,034 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 [2024-11-21 21:16:54,035 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:54,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1571099438, now seen corresponding path program 3 times [2024-11-21 21:16:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912352788] [2024-11-21 21:16:54,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:16:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:54,198 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 21:16:54,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:16:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-21 21:16:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:54,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912352788] [2024-11-21 21:16:54,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912352788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:54,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55973125] [2024-11-21 21:16:54,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:16:54,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:54,997 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) [2024-11-21 21:16:54,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-21 21:16:55,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 21:16:55,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:16:55,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-21 21:16:55,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:56,140 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 192 treesize of output 116 [2024-11-21 21:16:57,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:16:57,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 107 treesize of output 131 [2024-11-21 21:16:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-21 21:16:57,798 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:57,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55973125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:57,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:57,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-21 21:16:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287769563] [2024-11-21 21:16:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:57,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-21 21:16:57,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-21 21:16:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-21 21:16:57,801 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) [2024-11-21 21:16:59,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:59,466 INFO L93 Difference]: Finished difference Result 1440 states and 2131 transitions. [2024-11-21 21:16:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-21 21:16:59,467 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 [2024-11-21 21:16:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:59,471 INFO L225 Difference]: With dead ends: 1440 [2024-11-21 21:16:59,471 INFO L226 Difference]: Without dead ends: 931 [2024-11-21 21:16:59,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-21 21:16:59,473 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 285 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 21:16:59,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 957 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 21:16:59,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-11-21 21:16:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 887. [2024-11-21 21:16:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 827 states have (on average 1.4304715840386941) internal successors, (1183), 845 states have internal predecessors, (1183), 51 states have call successors, (51), 8 states have call predecessors, (51), 8 states have return successors, (51), 37 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-21 21:16:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1285 transitions. [2024-11-21 21:16:59,516 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1285 transitions. Word has length 206 [2024-11-21 21:16:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:59,517 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 1285 transitions. [2024-11-21 21:16:59,517 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) [2024-11-21 21:16:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1285 transitions. [2024-11-21 21:16:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-21 21:16:59,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:59,521 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, 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] [2024-11-21 21:16:59,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-21 21:16:59,724 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 [2024-11-21 21:16:59,725 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:59,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash -953097635, now seen corresponding path program 1 times [2024-11-21 21:16:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:59,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868835829] [2024-11-21 21:16:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:59,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-21 21:17:00,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:00,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868835829] [2024-11-21 21:17:00,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868835829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:00,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569011844] [2024-11-21 21:17:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:00,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:00,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:00,351 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) [2024-11-21 21:17:00,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-21 21:17:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:00,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 21:17:00,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-21 21:17:00,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-11-21 21:17:01,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569011844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:01,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:01,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2024-11-21 21:17:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344128767] [2024-11-21 21:17:01,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:01,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 21:17:01,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:01,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 21:17:01,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-21 21:17:01,063 INFO L87 Difference]: Start difference. First operand 887 states and 1285 transitions. Second operand has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-21 21:17:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:01,831 INFO L93 Difference]: Finished difference Result 3157 states and 4781 transitions. [2024-11-21 21:17:01,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-21 21:17:01,831 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 228 [2024-11-21 21:17:01,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:01,841 INFO L225 Difference]: With dead ends: 3157 [2024-11-21 21:17:01,842 INFO L226 Difference]: Without dead ends: 2439 [2024-11-21 21:17:01,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-11-21 21:17:01,845 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 204 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:01,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2225 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 21:17:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2024-11-21 21:17:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1075. [2024-11-21 21:17:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1007 states have (on average 1.4250248262164846) internal successors, (1435), 1029 states have internal predecessors, (1435), 59 states have call successors, (59), 8 states have call predecessors, (59), 8 states have return successors, (59), 41 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-21 21:17:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1553 transitions. [2024-11-21 21:17:01,905 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1553 transitions. Word has length 228 [2024-11-21 21:17:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:01,905 INFO L471 AbstractCegarLoop]: Abstraction has 1075 states and 1553 transitions. [2024-11-21 21:17:01,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-21 21:17:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1553 transitions. [2024-11-21 21:17:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-21 21:17:01,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:01,911 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:01,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-21 21:17:02,111 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,SelfDestructingSolverStorable16 [2024-11-21 21:17:02,112 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:02,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash -159310237, now seen corresponding path program 1 times [2024-11-21 21:17:02,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:02,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72940971] [2024-11-21 21:17:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:02,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-11-21 21:17:02,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:02,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72940971] [2024-11-21 21:17:02,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72940971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:02,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:02,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:02,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838193345] [2024-11-21 21:17:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:02,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:02,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:02,399 INFO L87 Difference]: Start difference. First operand 1075 states and 1553 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-11-21 21:17:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:02,449 INFO L93 Difference]: Finished difference Result 1769 states and 2616 transitions. [2024-11-21 21:17:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 240 [2024-11-21 21:17:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:02,454 INFO L225 Difference]: With dead ends: 1769 [2024-11-21 21:17:02,454 INFO L226 Difference]: Without dead ends: 1123 [2024-11-21 21:17:02,456 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 [2024-11-21 21:17:02,457 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 [2024-11-21 21:17:02,457 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] [2024-11-21 21:17:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2024-11-21 21:17:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1107. [2024-11-21 21:17:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1039 states have (on average 1.411934552454283) internal successors, (1467), 1061 states have internal predecessors, (1467), 59 states have call successors, (59), 8 states have call predecessors, (59), 8 states have return successors, (59), 41 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-21 21:17:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1585 transitions. [2024-11-21 21:17:02,507 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1585 transitions. Word has length 240 [2024-11-21 21:17:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:02,508 INFO L471 AbstractCegarLoop]: Abstraction has 1107 states and 1585 transitions. [2024-11-21 21:17:02,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-11-21 21:17:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1585 transitions. [2024-11-21 21:17:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-21 21:17:02,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:02,513 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:02,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-21 21:17:02,514 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:02,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1403984919, now seen corresponding path program 1 times [2024-11-21 21:17:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:02,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317347217] [2024-11-21 21:17:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:02,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-21 21:17:02,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:02,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317347217] [2024-11-21 21:17:02,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317347217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:02,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:02,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758061405] [2024-11-21 21:17:02,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:02,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:02,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:02,768 INFO L87 Difference]: Start difference. First operand 1107 states and 1585 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-21 21:17:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:02,856 INFO L93 Difference]: Finished difference Result 1833 states and 2696 transitions. [2024-11-21 21:17:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 240 [2024-11-21 21:17:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:02,862 INFO L225 Difference]: With dead ends: 1833 [2024-11-21 21:17:02,862 INFO L226 Difference]: Without dead ends: 1155 [2024-11-21 21:17:02,863 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 [2024-11-21 21:17:02,864 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 [2024-11-21 21:17:02,865 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] [2024-11-21 21:17:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2024-11-21 21:17:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2024-11-21 21:17:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1087 states have (on average 1.3937442502299908) internal successors, (1515), 1109 states have internal predecessors, (1515), 59 states have call successors, (59), 8 states have call predecessors, (59), 8 states have return successors, (59), 41 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-21 21:17:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1633 transitions. [2024-11-21 21:17:02,937 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1633 transitions. Word has length 240 [2024-11-21 21:17:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:02,938 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1633 transitions. [2024-11-21 21:17:02,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-21 21:17:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1633 transitions. [2024-11-21 21:17:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-21 21:17:02,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:02,944 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:02,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-21 21:17:02,944 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:02,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash -416833045, now seen corresponding path program 1 times [2024-11-21 21:17:02,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:02,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55531189] [2024-11-21 21:17:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2024-11-21 21:17:03,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:03,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55531189] [2024-11-21 21:17:03,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55531189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:03,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:03,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:03,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912697287] [2024-11-21 21:17:03,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:03,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:03,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:03,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:03,228 INFO L87 Difference]: Start difference. First operand 1155 states and 1633 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-21 21:17:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:03,297 INFO L93 Difference]: Finished difference Result 1897 states and 2728 transitions. [2024-11-21 21:17:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 240 [2024-11-21 21:17:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:03,303 INFO L225 Difference]: With dead ends: 1897 [2024-11-21 21:17:03,303 INFO L226 Difference]: Without dead ends: 1171 [2024-11-21 21:17:03,305 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 [2024-11-21 21:17:03,305 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 [2024-11-21 21:17:03,306 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] [2024-11-21 21:17:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-21 21:17:03,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1155. [2024-11-21 21:17:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1087 states have (on average 1.3790248390064397) internal successors, (1499), 1109 states have internal predecessors, (1499), 59 states have call successors, (59), 8 states have call predecessors, (59), 8 states have return successors, (59), 41 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-21 21:17:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1617 transitions. [2024-11-21 21:17:03,363 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1617 transitions. Word has length 240 [2024-11-21 21:17:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:03,364 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1617 transitions. [2024-11-21 21:17:03,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-21 21:17:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1617 transitions. [2024-11-21 21:17:03,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-21 21:17:03,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:03,368 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:03,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-21 21:17:03,369 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:03,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2105776787, now seen corresponding path program 1 times [2024-11-21 21:17:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:03,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605130978] [2024-11-21 21:17:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:03,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-11-21 21:17:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605130978] [2024-11-21 21:17:03,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605130978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:03,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:03,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104994344] [2024-11-21 21:17:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:03,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:03,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:03,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:03,669 INFO L87 Difference]: Start difference. First operand 1155 states and 1617 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-21 21:17:03,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:03,719 INFO L93 Difference]: Finished difference Result 1929 states and 2744 transitions. [2024-11-21 21:17:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:03,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 240 [2024-11-21 21:17:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:03,724 INFO L225 Difference]: With dead ends: 1929 [2024-11-21 21:17:03,724 INFO L226 Difference]: Without dead ends: 1203 [2024-11-21 21:17:03,726 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 [2024-11-21 21:17:03,726 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 [2024-11-21 21:17:03,727 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] [2024-11-21 21:17:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-11-21 21:17:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1187. [2024-11-21 21:17:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1119 states have (on average 1.353887399463807) internal successors, (1515), 1141 states have internal predecessors, (1515), 59 states have call successors, (59), 8 states have call predecessors, (59), 8 states have return successors, (59), 41 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-21 21:17:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1633 transitions. [2024-11-21 21:17:03,776 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1633 transitions. Word has length 240 [2024-11-21 21:17:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:03,777 INFO L471 AbstractCegarLoop]: Abstraction has 1187 states and 1633 transitions. [2024-11-21 21:17:03,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-21 21:17:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1633 transitions. [2024-11-21 21:17:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-21 21:17:03,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:03,782 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, 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] [2024-11-21 21:17:03,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-21 21:17:03,782 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:03,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash 600842607, now seen corresponding path program 1 times [2024-11-21 21:17:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143055857] [2024-11-21 21:17:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:03,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-11-21 21:17:04,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143055857] [2024-11-21 21:17:04,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143055857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:04,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888109986] [2024-11-21 21:17:04,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:04,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:04,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:04,299 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) [2024-11-21 21:17:04,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-21 21:17:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:04,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 21:17:04,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-21 21:17:05,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-11-21 21:17:05,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888109986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:05,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:05,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-11-21 21:17:05,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040116393] [2024-11-21 21:17:05,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:05,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-21 21:17:05,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-21 21:17:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-21 21:17:05,138 INFO L87 Difference]: Start difference. First operand 1187 states and 1633 transitions. Second operand has 17 states, 17 states have (on average 12.176470588235293) internal successors, (207), 17 states have internal predecessors, (207), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-21 21:17:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:05,863 INFO L93 Difference]: Finished difference Result 3670 states and 5144 transitions. [2024-11-21 21:17:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-21 21:17:05,864 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.176470588235293) internal successors, (207), 17 states have internal predecessors, (207), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 240 [2024-11-21 21:17:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:05,873 INFO L225 Difference]: With dead ends: 3670 [2024-11-21 21:17:05,874 INFO L226 Difference]: Without dead ends: 2696 [2024-11-21 21:17:05,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 467 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-11-21 21:17:05,876 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 212 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:05,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 2228 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 21:17:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2024-11-21 21:17:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 1444. [2024-11-21 21:17:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1370 states have (on average 1.3518248175182481) internal successors, (1852), 1395 states have internal predecessors, (1852), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1982 transitions. [2024-11-21 21:17:05,942 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1982 transitions. Word has length 240 [2024-11-21 21:17:05,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:05,942 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 1982 transitions. [2024-11-21 21:17:05,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.176470588235293) internal successors, (207), 17 states have internal predecessors, (207), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-21 21:17:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1982 transitions. [2024-11-21 21:17:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-21 21:17:05,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:05,948 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, 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] [2024-11-21 21:17:05,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-21 21:17:06,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-21 21:17:06,149 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:06,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 62484209, now seen corresponding path program 1 times [2024-11-21 21:17:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:06,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065166979] [2024-11-21 21:17:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:06,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2024-11-21 21:17:06,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:06,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065166979] [2024-11-21 21:17:06,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065166979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:06,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:06,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:06,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182375641] [2024-11-21 21:17:06,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:06,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:06,420 INFO L87 Difference]: Start difference. First operand 1444 states and 1982 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-21 21:17:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:06,470 INFO L93 Difference]: Finished difference Result 2474 states and 3429 transitions. [2024-11-21 21:17:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:06,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 249 [2024-11-21 21:17:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:06,477 INFO L225 Difference]: With dead ends: 2474 [2024-11-21 21:17:06,477 INFO L226 Difference]: Without dead ends: 1492 [2024-11-21 21:17:06,479 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 [2024-11-21 21:17:06,479 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 [2024-11-21 21:17:06,479 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] [2024-11-21 21:17:06,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-11-21 21:17:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1476. [2024-11-21 21:17:06,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1402 states have (on average 1.3437945791726105) internal successors, (1884), 1427 states have internal predecessors, (1884), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2014 transitions. [2024-11-21 21:17:06,531 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2014 transitions. Word has length 249 [2024-11-21 21:17:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:06,532 INFO L471 AbstractCegarLoop]: Abstraction has 1476 states and 2014 transitions. [2024-11-21 21:17:06,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-21 21:17:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2014 transitions. [2024-11-21 21:17:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-21 21:17:06,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:06,537 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, 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] [2024-11-21 21:17:06,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-21 21:17:06,537 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:06,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:06,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2024058867, now seen corresponding path program 1 times [2024-11-21 21:17:06,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:06,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505908235] [2024-11-21 21:17:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:06,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2024-11-21 21:17:06,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:06,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505908235] [2024-11-21 21:17:06,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505908235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:06,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:06,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:06,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917675254] [2024-11-21 21:17:06,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:06,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:06,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:06,773 INFO L87 Difference]: Start difference. First operand 1476 states and 2014 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-21 21:17:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:06,866 INFO L93 Difference]: Finished difference Result 2538 states and 3509 transitions. [2024-11-21 21:17:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:06,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 249 [2024-11-21 21:17:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:06,874 INFO L225 Difference]: With dead ends: 2538 [2024-11-21 21:17:06,874 INFO L226 Difference]: Without dead ends: 1524 [2024-11-21 21:17:06,876 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 [2024-11-21 21:17:06,876 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 [2024-11-21 21:17:06,876 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] [2024-11-21 21:17:06,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2024-11-21 21:17:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1524. [2024-11-21 21:17:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1450 states have (on average 1.3324137931034483) internal successors, (1932), 1475 states have internal predecessors, (1932), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2062 transitions. [2024-11-21 21:17:06,957 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2062 transitions. Word has length 249 [2024-11-21 21:17:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:06,958 INFO L471 AbstractCegarLoop]: Abstraction has 1524 states and 2062 transitions. [2024-11-21 21:17:06,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-21 21:17:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2062 transitions. [2024-11-21 21:17:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-21 21:17:06,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:06,964 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, 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] [2024-11-21 21:17:06,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-21 21:17:06,964 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:06,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1632841745, now seen corresponding path program 2 times [2024-11-21 21:17:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020648550] [2024-11-21 21:17:06,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:07,095 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:07,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-21 21:17:07,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:07,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020648550] [2024-11-21 21:17:07,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020648550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:07,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:07,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 21:17:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659690363] [2024-11-21 21:17:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:07,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 21:17:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 21:17:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:07,368 INFO L87 Difference]: Start difference. First operand 1524 states and 2062 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2024-11-21 21:17:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:07,571 INFO L93 Difference]: Finished difference Result 2698 states and 3637 transitions. [2024-11-21 21:17:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 21:17:07,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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 249 [2024-11-21 21:17:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:07,582 INFO L225 Difference]: With dead ends: 2698 [2024-11-21 21:17:07,582 INFO L226 Difference]: Without dead ends: 1636 [2024-11-21 21:17:07,584 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 [2024-11-21 21:17:07,585 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 29 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:07,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 790 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 21:17:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-21 21:17:07,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1524. [2024-11-21 21:17:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1450 states have (on average 1.3213793103448277) internal successors, (1916), 1475 states have internal predecessors, (1916), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2046 transitions. [2024-11-21 21:17:07,648 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2046 transitions. Word has length 249 [2024-11-21 21:17:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:07,648 INFO L471 AbstractCegarLoop]: Abstraction has 1524 states and 2046 transitions. [2024-11-21 21:17:07,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2024-11-21 21:17:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2046 transitions. [2024-11-21 21:17:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-21 21:17:07,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:07,654 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, 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] [2024-11-21 21:17:07,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-21 21:17:07,654 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:07,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash -973310223, now seen corresponding path program 1 times [2024-11-21 21:17:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:07,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804132280] [2024-11-21 21:17:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:07,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-11-21 21:17:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:07,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804132280] [2024-11-21 21:17:07,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804132280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:07,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:07,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019587300] [2024-11-21 21:17:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:07,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:07,931 INFO L87 Difference]: Start difference. First operand 1524 states and 2046 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-21 21:17:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:07,986 INFO L93 Difference]: Finished difference Result 2634 states and 3557 transitions. [2024-11-21 21:17:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:07,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 249 [2024-11-21 21:17:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:07,993 INFO L225 Difference]: With dead ends: 2634 [2024-11-21 21:17:07,994 INFO L226 Difference]: Without dead ends: 1572 [2024-11-21 21:17:07,996 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 [2024-11-21 21:17:07,997 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 [2024-11-21 21:17:07,998 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] [2024-11-21 21:17:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-11-21 21:17:08,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1556. [2024-11-21 21:17:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1482 states have (on average 1.3036437246963564) internal successors, (1932), 1507 states have internal predecessors, (1932), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2062 transitions. [2024-11-21 21:17:08,057 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2062 transitions. Word has length 249 [2024-11-21 21:17:08,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:08,058 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 2062 transitions. [2024-11-21 21:17:08,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-21 21:17:08,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2062 transitions. [2024-11-21 21:17:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-21 21:17:08,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:08,063 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, 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] [2024-11-21 21:17:08,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-21 21:17:08,064 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:08,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1817315725, now seen corresponding path program 1 times [2024-11-21 21:17:08,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209217681] [2024-11-21 21:17:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-21 21:17:08,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:08,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209217681] [2024-11-21 21:17:08,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209217681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:08,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:08,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022866237] [2024-11-21 21:17:08,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:08,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:08,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:08,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:08,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:08,303 INFO L87 Difference]: Start difference. First operand 1556 states and 2062 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-21 21:17:08,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:08,356 INFO L93 Difference]: Finished difference Result 2698 states and 3589 transitions. [2024-11-21 21:17:08,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:08,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 249 [2024-11-21 21:17:08,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:08,363 INFO L225 Difference]: With dead ends: 2698 [2024-11-21 21:17:08,364 INFO L226 Difference]: Without dead ends: 1604 [2024-11-21 21:17:08,366 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 [2024-11-21 21:17:08,366 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 [2024-11-21 21:17:08,367 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] [2024-11-21 21:17:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2024-11-21 21:17:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1588. [2024-11-21 21:17:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1514 states have (on average 1.2866578599735798) internal successors, (1948), 1539 states have internal predecessors, (1948), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2078 transitions. [2024-11-21 21:17:08,421 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2078 transitions. Word has length 249 [2024-11-21 21:17:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:08,422 INFO L471 AbstractCegarLoop]: Abstraction has 1588 states and 2078 transitions. [2024-11-21 21:17:08,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-21 21:17:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2078 transitions. [2024-11-21 21:17:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-21 21:17:08,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:08,426 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, 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] [2024-11-21 21:17:08,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-21 21:17:08,427 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:08,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1889702283, now seen corresponding path program 1 times [2024-11-21 21:17:08,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:08,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864480022] [2024-11-21 21:17:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:08,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2024-11-21 21:17:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864480022] [2024-11-21 21:17:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864480022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:08,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:08,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 21:17:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877339484] [2024-11-21 21:17:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:08,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:08,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:17:08,682 INFO L87 Difference]: Start difference. First operand 1588 states and 2078 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2024-11-21 21:17:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:08,733 INFO L93 Difference]: Finished difference Result 2762 states and 3637 transitions. [2024-11-21 21:17:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:08,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 249 [2024-11-21 21:17:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:08,743 INFO L225 Difference]: With dead ends: 2762 [2024-11-21 21:17:08,743 INFO L226 Difference]: Without dead ends: 1636 [2024-11-21 21:17:08,749 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 [2024-11-21 21:17:08,749 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 [2024-11-21 21:17:08,750 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] [2024-11-21 21:17:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-21 21:17:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2024-11-21 21:17:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1562 states have (on average 1.2573623559539053) internal successors, (1964), 1587 states have internal predecessors, (1964), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2094 transitions. [2024-11-21 21:17:08,808 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2094 transitions. Word has length 249 [2024-11-21 21:17:08,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:08,809 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2094 transitions. [2024-11-21 21:17:08,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2024-11-21 21:17:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2094 transitions. [2024-11-21 21:17:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-21 21:17:08,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:08,813 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, 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] [2024-11-21 21:17:08,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-21 21:17:08,813 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:08,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1188102409, now seen corresponding path program 1 times [2024-11-21 21:17:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:08,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956861866] [2024-11-21 21:17:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-21 21:17:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956861866] [2024-11-21 21:17:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956861866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743892440] [2024-11-21 21:17:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:09,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:09,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:09,148 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) [2024-11-21 21:17:09,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-21 21:17:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:09,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 21:17:09,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-21 21:17:10,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-21 21:17:10,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743892440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:10,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:10,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-21 21:17:10,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109006893] [2024-11-21 21:17:10,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:10,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-21 21:17:10,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:10,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-21 21:17:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-21 21:17:10,179 INFO L87 Difference]: Start difference. First operand 1636 states and 2094 transitions. Second operand has 12 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 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) [2024-11-21 21:17:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:10,559 INFO L93 Difference]: Finished difference Result 8681 states and 11064 transitions. [2024-11-21 21:17:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-21 21:17:10,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 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 249 [2024-11-21 21:17:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:10,588 INFO L225 Difference]: With dead ends: 8681 [2024-11-21 21:17:10,589 INFO L226 Difference]: Without dead ends: 8675 [2024-11-21 21:17:10,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 492 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-21 21:17:10,594 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 393 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:10,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 571 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:17:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8675 states. [2024-11-21 21:17:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8675 to 6916. [2024-11-21 21:17:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6916 states, 6842 states have (on average 1.2766734872844197) internal successors, (8735), 6867 states have internal predecessors, (8735), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 8865 transitions. [2024-11-21 21:17:10,760 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 8865 transitions. Word has length 249 [2024-11-21 21:17:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:10,761 INFO L471 AbstractCegarLoop]: Abstraction has 6916 states and 8865 transitions. [2024-11-21 21:17:10,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 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) [2024-11-21 21:17:10,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 8865 transitions. [2024-11-21 21:17:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-21 21:17:10,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:10,774 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, 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] [2024-11-21 21:17:10,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-21 21:17:10,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-21 21:17:10,975 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:10,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1591620609, now seen corresponding path program 2 times [2024-11-21 21:17:10,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:10,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668408351] [2024-11-21 21:17:10,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:10,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:11,136 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:11,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 199 proven. 28 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-21 21:17:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668408351] [2024-11-21 21:17:11,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668408351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:11,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132938544] [2024-11-21 21:17:11,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:11,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:11,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:11,431 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) [2024-11-21 21:17:11,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-21 21:17:12,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:12,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:12,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 21:17:12,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 208 proven. 19 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-21 21:17:12,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 208 proven. 19 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-21 21:17:12,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132938544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:12,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:12,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-21 21:17:12,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150850197] [2024-11-21 21:17:12,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:12,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-21 21:17:12,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:12,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-21 21:17:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-21 21:17:12,468 INFO L87 Difference]: Start difference. First operand 6916 states and 8865 transitions. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 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) [2024-11-21 21:17:12,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:12,756 INFO L93 Difference]: Finished difference Result 12665 states and 16226 transitions. [2024-11-21 21:17:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 21:17:12,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 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 299 [2024-11-21 21:17:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:12,776 INFO L225 Difference]: With dead ends: 12665 [2024-11-21 21:17:12,777 INFO L226 Difference]: Without dead ends: 10044 [2024-11-21 21:17:12,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 594 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-21 21:17:12,785 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 272 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:12,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 885 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 21:17:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2024-11-21 21:17:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 6826. [2024-11-21 21:17:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 6752 states have (on average 1.267031990521327) internal successors, (8555), 6777 states have internal predecessors, (8555), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-21 21:17:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 8685 transitions. [2024-11-21 21:17:12,955 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 8685 transitions. Word has length 299 [2024-11-21 21:17:12,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:12,955 INFO L471 AbstractCegarLoop]: Abstraction has 6826 states and 8685 transitions. [2024-11-21 21:17:12,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 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) [2024-11-21 21:17:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 8685 transitions. [2024-11-21 21:17:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-21 21:17:12,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:12,967 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, 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] [2024-11-21 21:17:12,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-21 21:17:13,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:13,168 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:13,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash 359067129, now seen corresponding path program 3 times [2024-11-21 21:17:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:13,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943152160] [2024-11-21 21:17:13,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:17:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:13,295 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 21:17:13,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:13,948 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-11-21 21:17:13,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:13,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943152160] [2024-11-21 21:17:13,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943152160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:13,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072993042] [2024-11-21 21:17:13,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:17:13,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:13,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:13,952 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) [2024-11-21 21:17:13,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-21 21:17:14,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 21:17:14,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:14,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-21 21:17:14,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:14,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-21 21:17:15,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:15,286 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 156 treesize of output 128 [2024-11-21 21:17:15,321 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_16 Int) (v_tso_core_write_~tail~0_29 Int)) (let ((.cse11 (select |c_old(#memory_int#13)| |c_tso_core_write_#in~wrBuffer.base|)) (.cse9 (+ 16 |c_tso_core_write_#in~wrBuffer.offset|))) (and (= |c_#memory_int#13| (store |c_old(#memory_int#13)| |c_tso_core_write_#in~wrBuffer.base| (let ((.cse10 (* v_tso_core_write_~tail~0_29 8))) (let ((.cse7 (+ .cse10 7 |c_tso_core_write_#in~wrBuffer.offset|)) (.cse5 (+ .cse10 6 |c_tso_core_write_#in~wrBuffer.offset|)) (.cse3 (+ .cse10 5 |c_tso_core_write_#in~wrBuffer.offset|)) (.cse2 (select |c_#memory_int#13| |c_tso_core_write_#in~wrBuffer.base|))) (let ((.cse0 (let ((.cse12 (+ .cse10 |c_tso_core_write_#in~wrBuffer.offset|))) (store .cse11 .cse12 (select .cse2 .cse12)))) (.cse1 (+ .cse10 |c_tso_core_write_#in~wrBuffer.offset| 4)) (.cse4 (select .cse2 .cse3)) (.cse6 (select .cse2 .cse5)) (.cse8 (select .cse2 .cse7))) (store (store (store (store (store .cse0 .cse1 (select .cse2 .cse1)) .cse3 .cse4) .cse5 .cse6) .cse7 .cse8) .cse9 (+ (mod (select (store (store (store (store .cse0 .cse1 v_arrayElimCell_16) .cse3 .cse4) .cse5 .cse6) .cse7 .cse8) .cse9) 256) 1))))))) (<= v_tso_core_write_~tail~0_29 (mod (+ (select .cse11 (+ |c_tso_core_write_#in~wrBuffer.offset| 17)) (select .cse11 .cse9)) 2))))) is different from true [2024-11-21 21:17:15,364 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 170 treesize of output 161 [2024-11-21 21:17:15,385 INFO L349 Elim1Store]: treesize reduction 60, result has 17.8 percent of original size [2024-11-21 21:17:15,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 281 [2024-11-21 21:17:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2024-11-21 21:17:15,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:16,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:16,087 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 68 treesize of output 52 [2024-11-21 21:17:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072993042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:16,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-21 21:17:16,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 16 [2024-11-21 21:17:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232933824] [2024-11-21 21:17:16,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:16,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-21 21:17:16,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-21 21:17:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=257, Unknown=1, NotChecked=32, Total=342 [2024-11-21 21:17:16,126 INFO L87 Difference]: Start difference. First operand 6826 states and 8685 transitions. Second operand has 16 states, 16 states have (on average 11.1875) internal successors, (179), 15 states have internal predecessors, (179), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-21 21:17:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:18,519 INFO L93 Difference]: Finished difference Result 19959 states and 25387 transitions. [2024-11-21 21:17:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-21 21:17:18,519 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.1875) internal successors, (179), 15 states have internal predecessors, (179), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 329 [2024-11-21 21:17:18,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:18,542 INFO L225 Difference]: With dead ends: 19959 [2024-11-21 21:17:18,542 INFO L226 Difference]: Without dead ends: 13581 [2024-11-21 21:17:18,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 494 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=551, Unknown=2, NotChecked=48, Total=702 [2024-11-21 21:17:18,554 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 357 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 46 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 507 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:18,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 2107 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 744 Invalid, 10 Unknown, 507 Unchecked, 2.0s Time] [2024-11-21 21:17:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13581 states. [2024-11-21 21:17:18,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13581 to 7038. [2024-11-21 21:17:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7038 states, 6943 states have (on average 1.267607662393778) internal successors, (8801), 6968 states have internal predecessors, (8801), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 63 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-21 21:17:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7038 states to 7038 states and 8969 transitions. [2024-11-21 21:17:18,797 INFO L78 Accepts]: Start accepts. Automaton has 7038 states and 8969 transitions. Word has length 329 [2024-11-21 21:17:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:18,798 INFO L471 AbstractCegarLoop]: Abstraction has 7038 states and 8969 transitions. [2024-11-21 21:17:18,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.1875) internal successors, (179), 15 states have internal predecessors, (179), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-21 21:17:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 7038 states and 8969 transitions. [2024-11-21 21:17:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-21 21:17:18,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:18,809 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, 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] [2024-11-21 21:17:18,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-21 21:17:19,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:19,010 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:19,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash 436225591, now seen corresponding path program 1 times [2024-11-21 21:17:19,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:19,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435435872] [2024-11-21 21:17:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:19,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 392 proven. 16 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2024-11-21 21:17:19,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:19,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435435872] [2024-11-21 21:17:19,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435435872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:19,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824999770] [2024-11-21 21:17:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:19,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:19,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:19,336 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) [2024-11-21 21:17:19,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-21 21:17:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:20,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 21:17:20,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 384 proven. 57 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-11-21 21:17:20,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 384 proven. 57 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-11-21 21:17:20,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824999770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:20,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:20,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2024-11-21 21:17:20,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008024247] [2024-11-21 21:17:20,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:20,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 21:17:20,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 21:17:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-21 21:17:20,491 INFO L87 Difference]: Start difference. First operand 7038 states and 8969 transitions. Second operand has 13 states, 13 states have (on average 25.53846153846154) internal successors, (332), 13 states have internal predecessors, (332), 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) [2024-11-21 21:17:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:21,119 INFO L93 Difference]: Finished difference Result 11959 states and 15210 transitions. [2024-11-21 21:17:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-21 21:17:21,119 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.53846153846154) internal successors, (332), 13 states have internal predecessors, (332), 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 330 [2024-11-21 21:17:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:21,138 INFO L225 Difference]: With dead ends: 11959 [2024-11-21 21:17:21,138 INFO L226 Difference]: Without dead ends: 9370 [2024-11-21 21:17:21,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=388, Unknown=0, NotChecked=0, Total=600 [2024-11-21 21:17:21,147 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 295 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:21,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1243 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:17:21,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9370 states. [2024-11-21 21:17:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9370 to 6994. [2024-11-21 21:17:21,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6994 states, 6899 states have (on average 1.2629366574865923) internal successors, (8713), 6924 states have internal predecessors, (8713), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 63 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-21 21:17:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 8881 transitions. [2024-11-21 21:17:21,399 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 8881 transitions. Word has length 330 [2024-11-21 21:17:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:21,400 INFO L471 AbstractCegarLoop]: Abstraction has 6994 states and 8881 transitions. [2024-11-21 21:17:21,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.53846153846154) internal successors, (332), 13 states have internal predecessors, (332), 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) [2024-11-21 21:17:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 8881 transitions. [2024-11-21 21:17:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-21 21:17:21,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:21,412 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, 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] [2024-11-21 21:17:21,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-21 21:17:21,613 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,SelfDestructingSolverStorable31 [2024-11-21 21:17:21,613 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:21,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1984957331, now seen corresponding path program 2 times [2024-11-21 21:17:21,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83489772] [2024-11-21 21:17:21,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:21,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:21,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2024-11-21 21:17:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83489772] [2024-11-21 21:17:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83489772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:21,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787941010] [2024-11-21 21:17:21,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:21,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:21,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:21,921 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) [2024-11-21 21:17:21,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-21 21:17:22,890 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:22,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:22,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:22,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2024-11-21 21:17:22,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2024-11-21 21:17:23,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787941010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:23,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:23,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-21 21:17:23,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903304843] [2024-11-21 21:17:23,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:23,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 21:17:23,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:23,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 21:17:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:23,058 INFO L87 Difference]: Start difference. First operand 6994 states and 8881 transitions. Second operand has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 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) [2024-11-21 21:17:23,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:23,326 INFO L93 Difference]: Finished difference Result 12519 states and 15864 transitions. [2024-11-21 21:17:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 21:17:23,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 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 370 [2024-11-21 21:17:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:23,339 INFO L225 Difference]: With dead ends: 12519 [2024-11-21 21:17:23,340 INFO L226 Difference]: Without dead ends: 10004 [2024-11-21 21:17:23,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 736 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-21 21:17:23,347 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 127 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:23,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 811 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 21:17:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states. [2024-11-21 21:17:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10004 to 6954. [2024-11-21 21:17:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6954 states, 6859 states have (on average 1.2586382854643534) internal successors, (8633), 6884 states have internal predecessors, (8633), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 63 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-21 21:17:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 8801 transitions. [2024-11-21 21:17:23,511 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 8801 transitions. Word has length 370 [2024-11-21 21:17:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:23,511 INFO L471 AbstractCegarLoop]: Abstraction has 6954 states and 8801 transitions. [2024-11-21 21:17:23,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 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) [2024-11-21 21:17:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 8801 transitions. [2024-11-21 21:17:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-21 21:17:23,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:23,523 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, 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] [2024-11-21 21:17:23,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-21 21:17:23,723 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,SelfDestructingSolverStorable32 [2024-11-21 21:17:23,724 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:23,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash 194148311, now seen corresponding path program 1 times [2024-11-21 21:17:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:23,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369910674] [2024-11-21 21:17:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2024-11-21 21:17:24,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:24,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369910674] [2024-11-21 21:17:24,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369910674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:24,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:24,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-21 21:17:24,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516531278] [2024-11-21 21:17:24,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:24,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 21:17:24,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:24,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 21:17:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:17:24,593 INFO L87 Difference]: Start difference. First operand 6954 states and 8801 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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) [2024-11-21 21:17:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:24,833 INFO L93 Difference]: Finished difference Result 15015 states and 18692 transitions. [2024-11-21 21:17:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 21:17:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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 400 [2024-11-21 21:17:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:24,846 INFO L225 Difference]: With dead ends: 15015 [2024-11-21 21:17:24,846 INFO L226 Difference]: Without dead ends: 9194 [2024-11-21 21:17:24,855 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 [2024-11-21 21:17:24,856 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:24,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 931 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:17:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9194 states. [2024-11-21 21:17:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9194 to 7810. [2024-11-21 21:17:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7810 states, 7715 states have (on average 1.2574206092028515) internal successors, (9701), 7740 states have internal predecessors, (9701), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 63 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-21 21:17:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 9869 transitions. [2024-11-21 21:17:25,022 INFO L78 Accepts]: Start accepts. Automaton has 7810 states and 9869 transitions. Word has length 400 [2024-11-21 21:17:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:25,023 INFO L471 AbstractCegarLoop]: Abstraction has 7810 states and 9869 transitions. [2024-11-21 21:17:25,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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) [2024-11-21 21:17:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states and 9869 transitions. [2024-11-21 21:17:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-21 21:17:25,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:25,035 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, 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] [2024-11-21 21:17:25,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-21 21:17:25,035 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:25,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:25,036 INFO L85 PathProgramCache]: Analyzing trace with hash 256371961, now seen corresponding path program 2 times [2024-11-21 21:17:25,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:25,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647759231] [2024-11-21 21:17:25,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:25,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:25,199 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:25,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2024-11-21 21:17:25,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:25,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647759231] [2024-11-21 21:17:25,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647759231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:25,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:25,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-21 21:17:25,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969205811] [2024-11-21 21:17:25,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:25,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 21:17:25,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:25,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 21:17:25,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:17:25,846 INFO L87 Difference]: Start difference. First operand 7810 states and 9869 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2024-11-21 21:17:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:26,128 INFO L93 Difference]: Finished difference Result 15870 states and 19807 transitions. [2024-11-21 21:17:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 21:17:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 400 [2024-11-21 21:17:26,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:26,140 INFO L225 Difference]: With dead ends: 15870 [2024-11-21 21:17:26,141 INFO L226 Difference]: Without dead ends: 9353 [2024-11-21 21:17:26,149 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 [2024-11-21 21:17:26,150 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 11 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:26,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1139 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 21:17:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9353 states. [2024-11-21 21:17:26,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9353 to 8602. [2024-11-21 21:17:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8602 states, 8507 states have (on average 1.2423886211355355) internal successors, (10569), 8532 states have internal predecessors, (10569), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 63 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-21 21:17:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 10737 transitions. [2024-11-21 21:17:26,320 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 10737 transitions. Word has length 400 [2024-11-21 21:17:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:26,321 INFO L471 AbstractCegarLoop]: Abstraction has 8602 states and 10737 transitions. [2024-11-21 21:17:26,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2024-11-21 21:17:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 10737 transitions. [2024-11-21 21:17:26,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-21 21:17:26,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:26,332 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] [2024-11-21 21:17:26,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-21 21:17:26,333 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:26,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash -484905987, now seen corresponding path program 3 times [2024-11-21 21:17:26,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325508308] [2024-11-21 21:17:26,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:17:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:26,927 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 21:17:26,927 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2024-11-21 21:17:27,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325508308] [2024-11-21 21:17:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325508308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322942653] [2024-11-21 21:17:27,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:17:27,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:27,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:27,925 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) [2024-11-21 21:17:27,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-21 21:17:29,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 21:17:29,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:29,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-21 21:17:29,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:30,316 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 162 treesize of output 161 [2024-11-21 21:17:31,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:31,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 142 treesize of output 181 [2024-11-21 21:17:33,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:33,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 171 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 144 treesize of output 190 [2024-11-21 21:17:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-21 21:17:33,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:33,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322942653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:33,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:33,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 15 [2024-11-21 21:17:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958218105] [2024-11-21 21:17:33,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:33,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-21 21:17:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-21 21:17:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-21 21:17:33,269 INFO L87 Difference]: Start difference. First operand 8602 states and 10737 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-21 21:17:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:35,022 INFO L93 Difference]: Finished difference Result 17014 states and 21209 transitions. [2024-11-21 21:17:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-21 21:17:35,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 400 [2024-11-21 21:17:35,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:35,031 INFO L225 Difference]: With dead ends: 17014 [2024-11-21 21:17:35,031 INFO L226 Difference]: Without dead ends: 9079 [2024-11-21 21:17:35,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 397 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-21 21:17:35,039 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 161 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:35,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 969 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 21:17:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9079 states. [2024-11-21 21:17:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9079 to 8991. [2024-11-21 21:17:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8991 states, 8845 states have (on average 1.2435274166195591) internal successors, (10999), 8902 states have internal predecessors, (10999), 129 states have call successors, (129), 16 states have call predecessors, (129), 16 states have return successors, (129), 80 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-21 21:17:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8991 states to 8991 states and 11257 transitions. [2024-11-21 21:17:35,249 INFO L78 Accepts]: Start accepts. Automaton has 8991 states and 11257 transitions. Word has length 400 [2024-11-21 21:17:35,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:35,250 INFO L471 AbstractCegarLoop]: Abstraction has 8991 states and 11257 transitions. [2024-11-21 21:17:35,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-21 21:17:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 8991 states and 11257 transitions. [2024-11-21 21:17:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-21 21:17:35,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:35,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:35,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-21 21:17:35,463 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 [2024-11-21 21:17:35,463 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:35,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1111186504, now seen corresponding path program 1 times [2024-11-21 21:17:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178913322] [2024-11-21 21:17:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2024-11-21 21:17:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178913322] [2024-11-21 21:17:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178913322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923200705] [2024-11-21 21:17:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:37,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:37,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:37,348 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) [2024-11-21 21:17:37,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-21 21:17:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:38,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-21 21:17:38,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:38,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 21:17:38,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 21:17:38,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 284 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 170 [2024-11-21 21:17:38,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:38,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 205 treesize of output 69 [2024-11-21 21:17:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2024-11-21 21:17:38,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:38,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923200705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:38,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:38,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-21 21:17:38,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152162942] [2024-11-21 21:17:38,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:38,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 21:17:38,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:38,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 21:17:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-21 21:17:38,807 INFO L87 Difference]: Start difference. First operand 8991 states and 11257 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 21:17:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:39,423 INFO L93 Difference]: Finished difference Result 17829 states and 22300 transitions. [2024-11-21 21:17:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 21:17:39,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 415 [2024-11-21 21:17:39,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:39,435 INFO L225 Difference]: With dead ends: 17829 [2024-11-21 21:17:39,435 INFO L226 Difference]: Without dead ends: 8984 [2024-11-21 21:17:39,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-21 21:17:39,445 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 48 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:39,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 748 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 21:17:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8984 states. [2024-11-21 21:17:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8984 to 8957. [2024-11-21 21:17:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 8819 states have (on average 1.2429980723438032) internal successors, (10962), 8868 states have internal predecessors, (10962), 121 states have call successors, (121), 16 states have call predecessors, (121), 16 states have return successors, (121), 80 states have call predecessors, (121), 121 states have call successors, (121) [2024-11-21 21:17:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 11204 transitions. [2024-11-21 21:17:39,654 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 11204 transitions. Word has length 415 [2024-11-21 21:17:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:39,654 INFO L471 AbstractCegarLoop]: Abstraction has 8957 states and 11204 transitions. [2024-11-21 21:17:39,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 21:17:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 11204 transitions. [2024-11-21 21:17:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-11-21 21:17:39,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:39,667 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:39,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-21 21:17:39,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:39,868 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:39,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash -399607593, now seen corresponding path program 1 times [2024-11-21 21:17:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292226859] [2024-11-21 21:17:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2024-11-21 21:17:41,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:41,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292226859] [2024-11-21 21:17:41,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292226859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:41,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15730204] [2024-11-21 21:17:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:41,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:41,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:41,796 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:41,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-21 21:17:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:42,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-21 21:17:42,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 21:17:43,261 INFO L224 Elim1Store]: Index analysis took 140 ms [2024-11-21 21:17:43,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 278 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 44 [2024-11-21 21:17:43,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:43,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 82 [2024-11-21 21:17:43,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:44,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 71 [2024-11-21 21:17:44,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:44,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 71 [2024-11-21 21:17:44,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 21:17:44,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 22 [2024-11-21 21:17:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-21 21:17:44,330 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15730204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:44,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-21 21:17:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346399880] [2024-11-21 21:17:44,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:44,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-21 21:17:44,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-21 21:17:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-21 21:17:44,333 INFO L87 Difference]: Start difference. First operand 8957 states and 11204 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8)