./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_85_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_85_safe.c-amalgamation.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6a710881eaad6aded56987b913b12a55a4da68397bdc7b0522819001922b6b90 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 00:59:21,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 00:59:21,723 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 00:59:21,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 00:59:21,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 00:59:21,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 00:59:21,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 00:59:21,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 00:59:21,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 00:59:21,774 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 00:59:21,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 00:59:21,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 00:59:21,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 00:59:21,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 00:59:21,778 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 00:59:21,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 00:59:21,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 00:59:21,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 00:59:21,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 00:59:21,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 00:59:21,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 00:59:21,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 00:59:21,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 00:59:21,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 00:59:21,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 00:59:21,784 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 00:59:21,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 00:59:21,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 00:59:21,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 00:59:21,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 00:59:21,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 00:59:21,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 00:59:21,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:59:21,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 00:59:21,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 00:59:21,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 00:59:21,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 00:59:21,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 00:59:21,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 00:59:21,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 00:59:21,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 00:59:21,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 00:59:21,790 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a710881eaad6aded56987b913b12a55a4da68397bdc7b0522819001922b6b90 [2024-10-11 00:59:22,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 00:59:22,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 00:59:22,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 00:59:22,083 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 00:59:22,084 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 00:59:22,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_85_safe.c-amalgamation.i [2024-10-11 00:59:23,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 00:59:23,828 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 00:59:23,830 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_85_safe.c-amalgamation.i [2024-10-11 00:59:23,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ed736da9f/c1559ea35b264b54a5c9c930cd094533/FLAGae8f6bd64 [2024-10-11 00:59:23,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ed736da9f/c1559ea35b264b54a5c9c930cd094533 [2024-10-11 00:59:23,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 00:59:23,883 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 00:59:23,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 00:59:23,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 00:59:23,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 00:59:23,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:59:23" (1/1) ... [2024-10-11 00:59:23,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17559773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:23, skipping insertion in model container [2024-10-11 00:59:23,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:59:23" (1/1) ... [2024-10-11 00:59:23,960 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 00:59:24,605 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_85_safe.c-amalgamation.i[63705,63718] [2024-10-11 00:59:24,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:59:24,918 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 00:59:24,966 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_85_safe.c-amalgamation.i[63705,63718] [2024-10-11 00:59:25,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:59:25,414 INFO L204 MainTranslator]: Completed translation [2024-10-11 00:59:25,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25 WrapperNode [2024-10-11 00:59:25,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 00:59:25,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 00:59:25,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 00:59:25,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 00:59:25,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:25,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:25,715 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-11 00:59:25,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 00:59:25,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 00:59:25,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 00:59:25,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 00:59:25,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:25,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:25,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:25,863 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 65, 4097, 65, 13, 129, 3, 10, 70, 3]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 7, 256, 64, 4096, 64, 0, 128, 2, 4, 64, 0]. The 10 writes are split as follows [0, 0, 0, 0, 0, 0, 4, 0, 0, 3, 2, 1]. [2024-10-11 00:59:25,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:25,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:26,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:26,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:26,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:26,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:26,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 00:59:26,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 00:59:26,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 00:59:26,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 00:59:26,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (1/1) ... [2024-10-11 00:59:26,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:59:26,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:26,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 00:59:26,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 00:59:26,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-11 00:59:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-11 00:59:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-11 00:59:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-11 00:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-11 00:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-11 00:59:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-11 00:59:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-11 00:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-11 00:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-11 00:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-11 00:59:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-11 00:59:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 00:59:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 00:59:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 00:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 00:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 00:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 00:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 00:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 00:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 00:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 00:59:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-11 00:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-11 00:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-11 00:59:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-11 00:59:26,537 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 00:59:26,540 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 00:59:32,361 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-11 00:59:32,361 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 00:59:32,681 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 00:59:32,681 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-11 00:59:32,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:59:32 BoogieIcfgContainer [2024-10-11 00:59:32,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 00:59:32,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 00:59:32,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 00:59:32,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 00:59:32,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:59:23" (1/3) ... [2024-10-11 00:59:32,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b7b88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:59:32, skipping insertion in model container [2024-10-11 00:59:32,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:59:25" (2/3) ... [2024-10-11 00:59:32,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b7b88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:59:32, skipping insertion in model container [2024-10-11 00:59:32,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:59:32" (3/3) ... [2024-10-11 00:59:32,694 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_85_safe.c-amalgamation.i [2024-10-11 00:59:32,713 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 00:59:32,714 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 00:59:32,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 00:59:32,792 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;@3dc0c630, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 00:59:32,793 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 00:59:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:59:32,804 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:32,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:32,805 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:32,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-11 00:59:32,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:32,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033642116] [2024-10-11 00:59:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:32,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:59:33,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033642116] [2024-10-11 00:59:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033642116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:59:33,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:59:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 00:59:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636911769] [2024-10-11 00:59:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:33,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 00:59:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 00:59:33,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 00:59:33,839 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:34,114 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-11 00:59:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 00:59:34,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-11 00:59:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:34,126 INFO L225 Difference]: With dead ends: 89 [2024-10-11 00:59:34,126 INFO L226 Difference]: Without dead ends: 44 [2024-10-11 00:59:34,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 00:59:34,132 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:34,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:59:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-11 00:59:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-11 00:59:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-11 00:59:34,169 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-11 00:59:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:34,171 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-11 00:59:34,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-11 00:59:34,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:59:34,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:34,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:34,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 00:59:34,175 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:34,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-11 00:59:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:34,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180998636] [2024-10-11 00:59:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:34,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:59:34,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:34,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180998636] [2024-10-11 00:59:34,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180998636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:59:34,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:59:34,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 00:59:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508327990] [2024-10-11 00:59:34,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:34,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:59:34,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:59:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:59:34,980 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:35,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:35,265 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-11 00:59:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:59:35,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-11 00:59:35,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:35,268 INFO L225 Difference]: With dead ends: 80 [2024-10-11 00:59:35,269 INFO L226 Difference]: Without dead ends: 44 [2024-10-11 00:59:35,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:59:35,271 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:35,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:59:35,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-11 00:59:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-11 00:59:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-11 00:59:35,283 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-11 00:59:35,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:35,283 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-11 00:59:35,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-11 00:59:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:59:35,286 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:35,286 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:35,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 00:59:35,286 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:35,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-11 00:59:35,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:35,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169608761] [2024-10-11 00:59:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:35,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:59:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169608761] [2024-10-11 00:59:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169608761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:59:36,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:59:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 00:59:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106347139] [2024-10-11 00:59:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:36,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:59:36,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:59:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:59:36,296 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:36,576 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-11 00:59:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:59:36,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-11 00:59:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:36,579 INFO L225 Difference]: With dead ends: 75 [2024-10-11 00:59:36,579 INFO L226 Difference]: Without dead ends: 45 [2024-10-11 00:59:36,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:59:36,582 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:36,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:59:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-11 00:59:36,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-11 00:59:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-11 00:59:36,593 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-11 00:59:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:36,593 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-11 00:59:36,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-11 00:59:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 00:59:36,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:36,595 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:36,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 00:59:36,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:36,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-11 00:59:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968552767] [2024-10-11 00:59:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:59:37,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:37,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968552767] [2024-10-11 00:59:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968552767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338440498] [2024-10-11 00:59:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:37,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:37,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:37,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 00:59:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:38,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 00:59:38,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:59:38,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 00:59:38,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338440498] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:38,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:59:38,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:59:38,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916878035] [2024-10-11 00:59:38,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:38,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:59:38,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:38,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:59:38,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:59:38,932 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:39,165 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-11 00:59:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:59:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-11 00:59:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:39,167 INFO L225 Difference]: With dead ends: 66 [2024-10-11 00:59:39,167 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 00:59:39,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:59:39,168 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:39,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:59:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 00:59:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-11 00:59:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-11 00:59:39,173 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-11 00:59:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:39,174 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-11 00:59:39,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-11 00:59:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 00:59:39,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:39,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:39,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 00:59:39,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:39,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:39,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-11 00:59:39,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95994182] [2024-10-11 00:59:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 00:59:40,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95994182] [2024-10-11 00:59:40,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95994182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515959213] [2024-10-11 00:59:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:40,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:40,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:40,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:40,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 00:59:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:41,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 00:59:41,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 00:59:41,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 00:59:41,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515959213] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:41,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:59:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:59:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54955116] [2024-10-11 00:59:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:41,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:59:41,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:59:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:59:41,623 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:41,797 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-11 00:59:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:59:41,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-11 00:59:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:41,798 INFO L225 Difference]: With dead ends: 57 [2024-10-11 00:59:41,798 INFO L226 Difference]: Without dead ends: 47 [2024-10-11 00:59:41,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:59:41,799 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:41,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:59:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-11 00:59:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-11 00:59:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-11 00:59:41,805 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-11 00:59:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:41,805 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-11 00:59:41,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-11 00:59:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 00:59:41,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:41,807 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:41,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 00:59:42,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:42,008 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:42,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:42,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-11 00:59:42,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:42,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738335775] [2024-10-11 00:59:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:42,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 00:59:42,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738335775] [2024-10-11 00:59:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738335775] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241776414] [2024-10-11 00:59:42,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:42,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:42,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:42,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:42,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 00:59:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:43,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 00:59:43,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 00:59:43,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 00:59:43,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241776414] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:43,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:59:43,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:59:43,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535757989] [2024-10-11 00:59:43,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:43,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:59:43,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:59:43,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:59:43,899 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:44,081 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-11 00:59:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:59:44,082 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-11 00:59:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:44,082 INFO L225 Difference]: With dead ends: 74 [2024-10-11 00:59:44,082 INFO L226 Difference]: Without dead ends: 48 [2024-10-11 00:59:44,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:59:44,083 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:44,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:59:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-11 00:59:44,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-11 00:59:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-11 00:59:44,088 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-11 00:59:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:44,088 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-11 00:59:44,088 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-11 00:59:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 00:59:44,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:44,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:44,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 00:59:44,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:44,291 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:44,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:44,291 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-11 00:59:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:44,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509929217] [2024-10-11 00:59:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 00:59:45,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:45,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509929217] [2024-10-11 00:59:45,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509929217] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:45,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153417130] [2024-10-11 00:59:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:45,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:45,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:45,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:45,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 00:59:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:46,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:59:46,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 00:59:46,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 00:59:46,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153417130] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:46,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:59:46,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 00:59:46,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534142914] [2024-10-11 00:59:46,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:46,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:59:46,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:59:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:59:46,124 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:46,318 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-11 00:59:46,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:59:46,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-11 00:59:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:46,320 INFO L225 Difference]: With dead ends: 64 [2024-10-11 00:59:46,322 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 00:59:46,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:59:46,323 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:46,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:59:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 00:59:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-11 00:59:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-11 00:59:46,332 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-11 00:59:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:46,332 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-11 00:59:46,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-11 00:59:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 00:59:46,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:46,333 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:46,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 00:59:46,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 00:59:46,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:46,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-11 00:59:46,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:46,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554341281] [2024-10-11 00:59:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:46,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 00:59:47,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:47,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554341281] [2024-10-11 00:59:47,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554341281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:47,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218899424] [2024-10-11 00:59:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:47,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:47,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:47,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:47,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 00:59:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:48,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:59:48,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 00:59:48,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 00:59:48,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218899424] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:48,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:59:48,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 00:59:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355080934] [2024-10-11 00:59:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:48,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:59:48,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:59:48,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:59:48,163 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:48,346 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-11 00:59:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:59:48,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-11 00:59:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:48,347 INFO L225 Difference]: With dead ends: 54 [2024-10-11 00:59:48,348 INFO L226 Difference]: Without dead ends: 50 [2024-10-11 00:59:48,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:59:48,348 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:48,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:59:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-11 00:59:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-11 00:59:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-11 00:59:48,353 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-11 00:59:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:48,353 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-11 00:59:48,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-11 00:59:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 00:59:48,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:48,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:48,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 00:59:48,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:48,555 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:48,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-11 00:59:48,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:48,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220492784] [2024-10-11 00:59:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:48,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 00:59:49,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:49,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220492784] [2024-10-11 00:59:49,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220492784] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:49,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496058920] [2024-10-11 00:59:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:49,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:49,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:49,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:49,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 00:59:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:50,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 00:59:50,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 00:59:50,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 00:59:50,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496058920] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:59:50,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:59:50,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-11 00:59:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678098011] [2024-10-11 00:59:50,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:59:50,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 00:59:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:50,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 00:59:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:59:50,366 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:50,656 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-10-11 00:59:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 00:59:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-11 00:59:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:50,657 INFO L225 Difference]: With dead ends: 95 [2024-10-11 00:59:50,657 INFO L226 Difference]: Without dead ends: 60 [2024-10-11 00:59:50,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 00:59:50,658 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:50,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:59:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-11 00:59:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-11 00:59:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-11 00:59:50,665 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 43 [2024-10-11 00:59:50,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:50,665 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-11 00:59:50,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:50,665 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-11 00:59:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 00:59:50,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:50,666 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-11 00:59:50,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 00:59:50,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 00:59:50,867 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:50,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash 528894503, now seen corresponding path program 2 times [2024-10-11 00:59:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:50,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185962329] [2024-10-11 00:59:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:50,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 00:59:51,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:51,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185962329] [2024-10-11 00:59:51,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185962329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:51,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938311781] [2024-10-11 00:59:51,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 00:59:51,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:51,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:51,688 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:51,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 00:59:52,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 00:59:52,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:59:52,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 5358 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 00:59:52,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 00:59:52,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 00:59:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938311781] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:52,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:59:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-11 00:59:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679005134] [2024-10-11 00:59:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:59:52,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:59:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:59:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:59:52,732 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:52,940 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-10-11 00:59:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:59:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-11 00:59:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:52,941 INFO L225 Difference]: With dead ends: 70 [2024-10-11 00:59:52,941 INFO L226 Difference]: Without dead ends: 61 [2024-10-11 00:59:52,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:59:52,942 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:52,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:59:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-11 00:59:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-11 00:59:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-11 00:59:52,948 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 53 [2024-10-11 00:59:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:52,950 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-11 00:59:52,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-11 00:59:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 00:59:52,951 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:52,952 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-11 00:59:52,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 00:59:53,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:53,153 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:53,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 1 times [2024-10-11 00:59:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362274020] [2024-10-11 00:59:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 00:59:53,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:53,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362274020] [2024-10-11 00:59:53,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362274020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:53,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774377377] [2024-10-11 00:59:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:53,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:53,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:53,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:53,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 00:59:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:54,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:59:54,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 00:59:54,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-11 00:59:54,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774377377] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:59:54,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:59:54,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-11 00:59:54,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165017164] [2024-10-11 00:59:54,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:59:54,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 00:59:54,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 00:59:54,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 00:59:54,918 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:55,214 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-11 00:59:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 00:59:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-11 00:59:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:55,215 INFO L225 Difference]: With dead ends: 116 [2024-10-11 00:59:55,215 INFO L226 Difference]: Without dead ends: 71 [2024-10-11 00:59:55,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 00:59:55,216 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:55,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 192 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:59:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-11 00:59:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-11 00:59:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-11 00:59:55,222 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-11 00:59:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:55,223 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-11 00:59:55,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-11 00:59:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 00:59:55,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:55,224 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:59:55,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 00:59:55,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 00:59:55,424 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:55,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 2 times [2024-10-11 00:59:55,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:55,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164190404] [2024-10-11 00:59:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:55,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 00:59:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164190404] [2024-10-11 00:59:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164190404] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464504559] [2024-10-11 00:59:56,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 00:59:56,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:56,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:56,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 00:59:57,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 00:59:57,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:59:57,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 5437 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 00:59:57,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:59:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-11 00:59:57,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:59:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-11 00:59:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464504559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:59:57,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:59:57,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 13 [2024-10-11 00:59:57,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91662162] [2024-10-11 00:59:57,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:59:57,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 00:59:57,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:59:57,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 00:59:57,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-11 00:59:57,564 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:59:57,895 INFO L93 Difference]: Finished difference Result 135 states and 182 transitions. [2024-10-11 00:59:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 00:59:57,896 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-11 00:59:57,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:59:57,896 INFO L225 Difference]: With dead ends: 135 [2024-10-11 00:59:57,897 INFO L226 Difference]: Without dead ends: 81 [2024-10-11 00:59:57,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-10-11 00:59:57,897 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 32 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:59:57,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 227 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:59:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-11 00:59:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-11 00:59:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3375) internal successors, (107), 80 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2024-10-11 00:59:57,904 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 66 [2024-10-11 00:59:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:59:57,904 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2024-10-11 00:59:57,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:59:57,904 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2024-10-11 00:59:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 00:59:57,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:59:57,905 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-10-11 00:59:57,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 00:59:58,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:58,106 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:59:58,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:59:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1529729791, now seen corresponding path program 3 times [2024-10-11 00:59:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:59:58,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942603483] [2024-10-11 00:59:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:59:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:59:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:59:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 00:59:59,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:59:59,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942603483] [2024-10-11 00:59:59,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942603483] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:59:59,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005879102] [2024-10-11 00:59:59,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 00:59:59,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:59:59,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:59:59,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:59:59,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 01:00:00,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:00:00,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:00:00,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:00:00,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 01:00:00,066 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:00:00,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005879102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:00:00,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:00:00,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-11 01:00:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076286574] [2024-10-11 01:00:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:00:00,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:00:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:00:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:00:00,068 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:00,231 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2024-10-11 01:00:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:00:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-11 01:00:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:00,232 INFO L225 Difference]: With dead ends: 124 [2024-10-11 01:00:00,233 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 01:00:00,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:00:00,233 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:00,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:00:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 01:00:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-10-11 01:00:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 81 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions. [2024-10-11 01:00:00,239 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 70 [2024-10-11 01:00:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:00,239 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 108 transitions. [2024-10-11 01:00:00,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions. [2024-10-11 01:00:00,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 01:00:00,240 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:00,240 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-10-11 01:00:00,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 01:00:00,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 01:00:00,441 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:00,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1554558736, now seen corresponding path program 1 times [2024-10-11 01:00:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:00,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023842521] [2024-10-11 01:00:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 01:00:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023842521] [2024-10-11 01:00:01,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023842521] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:01,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068396004] [2024-10-11 01:00:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:01,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:01,374 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:01,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 01:00:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:02,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 5476 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:00:02,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 01:00:02,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:00:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068396004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:00:02,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:00:02,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-11 01:00:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760701478] [2024-10-11 01:00:02,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:00:02,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:00:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:00:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:00:02,510 INFO L87 Difference]: Start difference. First operand 82 states and 108 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:02,675 INFO L93 Difference]: Finished difference Result 147 states and 197 transitions. [2024-10-11 01:00:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:00:02,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-11 01:00:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:02,676 INFO L225 Difference]: With dead ends: 147 [2024-10-11 01:00:02,676 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 01:00:02,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:00:02,677 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:02,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:00:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 01:00:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-10-11 01:00:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-11 01:00:02,689 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 73 [2024-10-11 01:00:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:02,690 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-11 01:00:02,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-11 01:00:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 01:00:02,691 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:02,695 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-10-11 01:00:02,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 01:00:02,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 01:00:02,896 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:02,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1120259536, now seen corresponding path program 1 times [2024-10-11 01:00:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452484665] [2024-10-11 01:00:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 01:00:03,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:03,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452484665] [2024-10-11 01:00:03,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452484665] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:03,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572384825] [2024-10-11 01:00:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:03,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:03,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:03,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:03,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 01:00:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:04,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 5490 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:00:04,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-11 01:00:04,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:00:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 01:00:05,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572384825] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:05,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:00:05,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-11 01:00:05,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964749842] [2024-10-11 01:00:05,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:00:05,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:00:05,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:05,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:00:05,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:00:05,023 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:05,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:05,197 INFO L93 Difference]: Finished difference Result 125 states and 166 transitions. [2024-10-11 01:00:05,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:00:05,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-11 01:00:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:05,198 INFO L225 Difference]: With dead ends: 125 [2024-10-11 01:00:05,198 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 01:00:05,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:00:05,199 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:05,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:00:05,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 01:00:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-11 01:00:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3253012048192772) internal successors, (110), 83 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2024-10-11 01:00:05,205 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 76 [2024-10-11 01:00:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:05,206 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-10-11 01:00:05,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2024-10-11 01:00:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 01:00:05,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:05,206 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-10-11 01:00:05,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 01:00:05,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 01:00:05,407 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:05,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash -604552515, now seen corresponding path program 1 times [2024-10-11 01:00:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:05,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334548006] [2024-10-11 01:00:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:05,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-11 01:00:06,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334548006] [2024-10-11 01:00:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334548006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041879386] [2024-10-11 01:00:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:06,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:06,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:06,196 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:06,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 01:00:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:07,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:00:07,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-11 01:00:07,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:00:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 01:00:07,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041879386] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:07,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:00:07,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-11 01:00:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382444769] [2024-10-11 01:00:07,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:00:07,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:00:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:07,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:00:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:00:07,375 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:07,563 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-10-11 01:00:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:00:07,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-11 01:00:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:07,564 INFO L225 Difference]: With dead ends: 107 [2024-10-11 01:00:07,564 INFO L226 Difference]: Without dead ends: 88 [2024-10-11 01:00:07,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:00:07,565 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:07,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:00:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-11 01:00:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-11 01:00:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3103448275862069) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2024-10-11 01:00:07,573 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 77 [2024-10-11 01:00:07,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:07,573 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2024-10-11 01:00:07,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2024-10-11 01:00:07,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 01:00:07,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:07,574 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-10-11 01:00:07,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 01:00:07,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:07,775 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:07,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -550947933, now seen corresponding path program 1 times [2024-10-11 01:00:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313801215] [2024-10-11 01:00:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 01:00:08,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:08,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313801215] [2024-10-11 01:00:08,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313801215] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:08,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757591533] [2024-10-11 01:00:08,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:08,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:08,570 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:08,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 01:00:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:09,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 5499 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 01:00:09,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 01:00:09,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:00:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-11 01:00:09,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757591533] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:09,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:00:09,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 9] total 16 [2024-10-11 01:00:09,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805308667] [2024-10-11 01:00:09,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:00:09,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:00:09,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:00:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-11 01:00:09,753 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:09,945 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2024-10-11 01:00:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:00:09,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-11 01:00:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:09,946 INFO L225 Difference]: With dead ends: 157 [2024-10-11 01:00:09,946 INFO L226 Difference]: Without dead ends: 89 [2024-10-11 01:00:09,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-11 01:00:09,947 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:09,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:00:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-11 01:00:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-11 01:00:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 88 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2024-10-11 01:00:09,952 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 79 [2024-10-11 01:00:09,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:09,953 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2024-10-11 01:00:09,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2024-10-11 01:00:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 01:00:09,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:09,954 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-10-11 01:00:09,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 01:00:10,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 01:00:10,154 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:10,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1880924804, now seen corresponding path program 1 times [2024-10-11 01:00:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042841941] [2024-10-11 01:00:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:10,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-11 01:00:10,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042841941] [2024-10-11 01:00:10,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042841941] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911982670] [2024-10-11 01:00:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:10,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:10,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:10,970 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:10,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 01:00:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:11,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 5502 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 01:00:11,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 01:00:11,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:00:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-11 01:00:12,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911982670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:00:12,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:00:12,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-11 01:00:12,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919686952] [2024-10-11 01:00:12,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:00:12,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 01:00:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 01:00:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-11 01:00:12,130 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:12,725 INFO L93 Difference]: Finished difference Result 177 states and 238 transitions. [2024-10-11 01:00:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 01:00:12,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-11 01:00:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:12,726 INFO L225 Difference]: With dead ends: 177 [2024-10-11 01:00:12,726 INFO L226 Difference]: Without dead ends: 108 [2024-10-11 01:00:12,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-10-11 01:00:12,727 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:12,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 431 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 01:00:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-11 01:00:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-11 01:00:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.308411214953271) internal successors, (140), 107 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:12,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2024-10-11 01:00:12,735 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 80 [2024-10-11 01:00:12,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:12,735 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2024-10-11 01:00:12,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:12,735 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2024-10-11 01:00:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 01:00:12,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:12,736 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 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] [2024-10-11 01:00:12,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 01:00:12,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 01:00:12,937 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:12,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 213343619, now seen corresponding path program 2 times [2024-10-11 01:00:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:12,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828681422] [2024-10-11 01:00:12,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:12,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-11 01:00:14,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:14,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828681422] [2024-10-11 01:00:14,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828681422] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779891855] [2024-10-11 01:00:14,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:00:14,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:14,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:14,250 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:14,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 01:00:15,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:00:15,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:00:15,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 5613 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 01:00:15,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-10-11 01:00:15,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:00:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-10-11 01:00:15,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779891855] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:00:15,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:00:15,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 6] total 26 [2024-10-11 01:00:15,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455356699] [2024-10-11 01:00:15,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:00:15,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 01:00:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 01:00:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-10-11 01:00:15,602 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:16,492 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-10-11 01:00:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:00:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-10-11 01:00:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:16,494 INFO L225 Difference]: With dead ends: 206 [2024-10-11 01:00:16,494 INFO L226 Difference]: Without dead ends: 115 [2024-10-11 01:00:16,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-10-11 01:00:16,495 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 31 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:16,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 854 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 01:00:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-11 01:00:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-10-11 01:00:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 112 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 145 transitions. [2024-10-11 01:00:16,502 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 145 transitions. Word has length 99 [2024-10-11 01:00:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:16,502 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 145 transitions. [2024-10-11 01:00:16,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:16,503 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 145 transitions. [2024-10-11 01:00:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 01:00:16,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:16,504 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 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] [2024-10-11 01:00:16,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 01:00:16,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:16,705 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:16,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:16,705 INFO L85 PathProgramCache]: Analyzing trace with hash -774915223, now seen corresponding path program 3 times [2024-10-11 01:00:16,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:16,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262353961] [2024-10-11 01:00:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:16,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 01:00:18,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:18,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262353961] [2024-10-11 01:00:18,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262353961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:18,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830860243] [2024-10-11 01:00:18,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:00:18,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:18,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:18,030 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:18,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 01:00:19,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:00:19,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:00:19,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 01:00:19,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-11 01:00:19,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:00:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-11 01:00:19,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830860243] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:00:19,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:00:19,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 22 [2024-10-11 01:00:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543571327] [2024-10-11 01:00:19,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:00:19,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 01:00:19,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 01:00:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:00:19,505 INFO L87 Difference]: Start difference. First operand 113 states and 145 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:20,426 INFO L93 Difference]: Finished difference Result 195 states and 257 transitions. [2024-10-11 01:00:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:00:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-10-11 01:00:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:20,427 INFO L225 Difference]: With dead ends: 195 [2024-10-11 01:00:20,427 INFO L226 Difference]: Without dead ends: 147 [2024-10-11 01:00:20,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-10-11 01:00:20,429 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 79 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:20,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 756 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 01:00:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-11 01:00:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2024-10-11 01:00:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.2971014492753623) internal successors, (179), 138 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 179 transitions. [2024-10-11 01:00:20,442 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 179 transitions. Word has length 104 [2024-10-11 01:00:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:20,443 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 179 transitions. [2024-10-11 01:00:20,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 179 transitions. [2024-10-11 01:00:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-11 01:00:20,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:20,444 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-11 01:00:20,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 01:00:20,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:20,645 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:20,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:20,645 INFO L85 PathProgramCache]: Analyzing trace with hash -47110729, now seen corresponding path program 4 times [2024-10-11 01:00:20,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:20,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753019572] [2024-10-11 01:00:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-11 01:00:21,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:21,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753019572] [2024-10-11 01:00:21,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753019572] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:21,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197812492] [2024-10-11 01:00:21,889 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:00:21,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:21,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:21,891 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:21,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 01:00:22,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:00:22,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:00:22,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 5706 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 01:00:22,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:00:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-10-11 01:00:23,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:00:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-11 01:00:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197812492] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:00:23,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:00:23,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 7] total 25 [2024-10-11 01:00:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422149982] [2024-10-11 01:00:23,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:00:23,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 01:00:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:00:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 01:00:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-10-11 01:00:23,244 INFO L87 Difference]: Start difference. First operand 139 states and 179 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:00:24,137 INFO L93 Difference]: Finished difference Result 233 states and 309 transitions. [2024-10-11 01:00:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:00:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-10-11 01:00:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:00:24,138 INFO L225 Difference]: With dead ends: 233 [2024-10-11 01:00:24,138 INFO L226 Difference]: Without dead ends: 162 [2024-10-11 01:00:24,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2024-10-11 01:00:24,139 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 55 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 01:00:24,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 882 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 01:00:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-10-11 01:00:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2024-10-11 01:00:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.3018867924528301) internal successors, (207), 159 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 207 transitions. [2024-10-11 01:00:24,149 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 207 transitions. Word has length 119 [2024-10-11 01:00:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:00:24,149 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 207 transitions. [2024-10-11 01:00:24,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:00:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 207 transitions. [2024-10-11 01:00:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-11 01:00:24,151 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:00:24,151 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 10, 4, 4, 4, 4, 4, 4, 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] [2024-10-11 01:00:24,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-11 01:00:24,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 01:00:24,353 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:00:24,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:00:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1655509955, now seen corresponding path program 5 times [2024-10-11 01:00:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:00:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66974892] [2024-10-11 01:00:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:00:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:00:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:00:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-11 01:00:25,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:00:25,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66974892] [2024-10-11 01:00:25,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66974892] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:00:25,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447729060] [2024-10-11 01:00:25,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:00:25,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:00:25,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:00:25,846 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:00:25,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process