./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_21_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_21_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6b0ccc3bee8fef2adc603370ba13ce7233490565dbc8f5a85e00c6b8aaaf0bc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:35:56,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:35:56,856 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 22:35:56,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:35:56,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:35:56,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:35:56,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:35:56,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:35:56,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:35:56,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:35:56,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:35:56,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:35:56,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:35:56,908 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:35:56,908 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:35:56,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:35:56,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:35:56,913 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:35:56,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 22:35:56,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:35:56,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:35:56,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:35:56,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:35:56,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:35:56,915 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:35:56,915 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:35:56,916 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:35:56,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:35:56,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:35:56,917 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:35:56,917 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:35:56,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:35:56,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:35:56,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:35:56,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:35:56,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:35:56,919 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 22:35:56,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 22:35:56,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:35:56,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:35:56,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:35:56,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:35:56,922 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b0ccc3bee8fef2adc603370ba13ce7233490565dbc8f5a85e00c6b8aaaf0bc [2024-10-23 22:35:57,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:35:57,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:35:57,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:35:57,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:35:57,187 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:35:57,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_21_safe.c-amalgamation.i [2024-10-23 22:35:58,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:35:59,025 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:35:59,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_21_safe.c-amalgamation.i [2024-10-23 22:35:59,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92040132f/54f67f2361ce4d5f8fabbf72aec8ffd0/FLAGa4c1ae983 [2024-10-23 22:35:59,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92040132f/54f67f2361ce4d5f8fabbf72aec8ffd0 [2024-10-23 22:35:59,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:35:59,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:35:59,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:35:59,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:35:59,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:35:59,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:35:59" (1/1) ... [2024-10-23 22:35:59,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e208962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:35:59, skipping insertion in model container [2024-10-23 22:35:59,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:35:59" (1/1) ... [2024-10-23 22:35:59,165 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:35:59,844 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_21_safe.c-amalgamation.i[63700,63713] [2024-10-23 22:36:00,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:36:00,267 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:36:00,321 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_21_safe.c-amalgamation.i[63700,63713] [2024-10-23 22:36:00,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:36:00,694 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:36:00,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00 WrapperNode [2024-10-23 22:36:00,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:36:00,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:36:00,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:36:00,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:36:00,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:00,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,048 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-23 22:36:01,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:36:01,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:36:01,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:36:01,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:36:01,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,362 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 65, 4097, 13, 65, 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, 0, 64, 128, 2, 4, 64, 0]. The 10 writes are split as follows [0, 0, 0, 0, 0, 4, 0, 0, 0, 3, 2, 1]. [2024-10-23 22:36:01,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:36:01,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:36:01,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:36:01,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:36:01,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (1/1) ... [2024-10-23 22:36:01,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:36:01,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:01,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 22:36:01,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 22:36:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 22:36:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 22:36:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 22:36:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 22:36:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-23 22:36:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-23 22:36:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-23 22:36:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-23 22:36:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-23 22:36:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-23 22:36:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-23 22:36:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-23 22:36:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:36:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-23 22:36:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-23 22:36:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-23 22:36:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-23 22:36:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-23 22:36:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-23 22:36:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-23 22:36:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-23 22:36:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-23 22:36:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-23 22:36:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-23 22:36:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-23 22:36:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 22:36:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 22:36:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 22:36:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:36:01,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:36:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:36:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 22:36:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 22:36:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 22:36:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 22:36:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-23 22:36:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-23 22:36:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-23 22:36:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-23 22:36:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-23 22:36:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-23 22:36:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-23 22:36:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-23 22:36:01,838 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:36:01,840 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:36:07,550 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-23 22:36:07,551 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:36:07,863 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:36:07,863 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-23 22:36:07,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:36:07 BoogieIcfgContainer [2024-10-23 22:36:07,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:36:07,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:36:07,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:36:07,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:36:07,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:35:59" (1/3) ... [2024-10-23 22:36:07,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c5a9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:36:07, skipping insertion in model container [2024-10-23 22:36:07,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:00" (2/3) ... [2024-10-23 22:36:07,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c5a9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:36:07, skipping insertion in model container [2024-10-23 22:36:07,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:36:07" (3/3) ... [2024-10-23 22:36:07,875 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_21_safe.c-amalgamation.i [2024-10-23 22:36:07,891 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:36:07,892 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:36:07,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:36:07,961 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;@f4e3e0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:36:07,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:36:07,967 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) [2024-10-23 22:36:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:36:07,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:07,973 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] [2024-10-23 22:36:07,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:07,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-23 22:36:07,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:07,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499593328] [2024-10-23 22:36:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:36:08,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:08,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499593328] [2024-10-23 22:36:08,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499593328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:36:08,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:36:08,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:36:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089970604] [2024-10-23 22:36:08,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:08,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:36:08,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:36:09,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:36:09,025 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) [2024-10-23 22:36:09,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:09,269 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-23 22:36:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:36:09,272 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 [2024-10-23 22:36:09,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:09,279 INFO L225 Difference]: With dead ends: 89 [2024-10-23 22:36:09,279 INFO L226 Difference]: Without dead ends: 44 [2024-10-23 22:36:09,282 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 [2024-10-23 22:36:09,285 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, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:09,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-23 22:36:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-23 22:36:09,315 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) [2024-10-23 22:36:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-23 22:36:09,317 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-23 22:36:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:09,318 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-23 22:36:09,318 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) [2024-10-23 22:36:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-23 22:36:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:36:09,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:09,320 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] [2024-10-23 22:36:09,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 22:36:09,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:09,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:09,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-23 22:36:09,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:09,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827023885] [2024-10-23 22:36:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:09,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:36:10,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:10,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827023885] [2024-10-23 22:36:10,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827023885] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:36:10,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:36:10,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:36:10,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615412996] [2024-10-23 22:36:10,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:10,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:36:10,008 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) [2024-10-23 22:36:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:10,285 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-23 22:36:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:10,286 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 [2024-10-23 22:36:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:10,287 INFO L225 Difference]: With dead ends: 80 [2024-10-23 22:36:10,287 INFO L226 Difference]: Without dead ends: 44 [2024-10-23 22:36:10,288 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 [2024-10-23 22:36:10,289 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 [2024-10-23 22:36:10,291 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] [2024-10-23 22:36:10,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-23 22:36:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-23 22:36:10,299 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) [2024-10-23 22:36:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-23 22:36:10,302 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-23 22:36:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:10,303 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-23 22:36:10,303 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) [2024-10-23 22:36:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-23 22:36:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:36:10,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:10,306 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] [2024-10-23 22:36:10,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 22:36:10,306 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:10,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-23 22:36:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:10,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854537345] [2024-10-23 22:36:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:10,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:36:11,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:11,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854537345] [2024-10-23 22:36:11,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854537345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:36:11,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:36:11,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:36:11,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232121031] [2024-10-23 22:36:11,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:11,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:11,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:36:11,439 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) [2024-10-23 22:36:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:11,685 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-23 22:36:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:11,686 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 [2024-10-23 22:36:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:11,687 INFO L225 Difference]: With dead ends: 75 [2024-10-23 22:36:11,687 INFO L226 Difference]: Without dead ends: 45 [2024-10-23 22:36:11,687 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 [2024-10-23 22:36:11,688 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, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:11,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:11,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-23 22:36:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-23 22:36:11,692 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) [2024-10-23 22:36:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-23 22:36:11,693 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-23 22:36:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:11,693 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-23 22:36:11,694 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) [2024-10-23 22:36:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-23 22:36:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 22:36:11,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:11,695 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] [2024-10-23 22:36:11,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 22:36:11,696 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:11,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:11,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-23 22:36:11,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:11,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426676961] [2024-10-23 22:36:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:11,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:36:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:12,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426676961] [2024-10-23 22:36:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426676961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733040460] [2024-10-23 22:36:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:12,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:12,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:12,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 22:36:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:13,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:36:13,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:36:13,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:36:14,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733040460] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:14,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:14,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:36:14,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198954606] [2024-10-23 22:36:14,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:14,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:14,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:14,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:14,008 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) [2024-10-23 22:36:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:14,296 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-23 22:36:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:14,297 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 [2024-10-23 22:36:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:14,298 INFO L225 Difference]: With dead ends: 66 [2024-10-23 22:36:14,298 INFO L226 Difference]: Without dead ends: 46 [2024-10-23 22:36:14,298 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 [2024-10-23 22:36:14,299 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:14,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:36:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-23 22:36:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-23 22:36:14,303 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) [2024-10-23 22:36:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-23 22:36:14,304 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-23 22:36:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:14,304 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-23 22:36:14,304 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) [2024-10-23 22:36:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-23 22:36:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-23 22:36:14,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:14,305 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] [2024-10-23 22:36:14,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:14,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:14,510 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:14,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-23 22:36:14,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:14,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69681731] [2024-10-23 22:36:14,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:14,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:36:15,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:15,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69681731] [2024-10-23 22:36:15,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69681731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:15,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783780600] [2024-10-23 22:36:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:15,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:15,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:15,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 22:36:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:16,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:36:16,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:36:16,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:36:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783780600] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:16,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:16,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:36:16,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818046716] [2024-10-23 22:36:16,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:16,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:16,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:16,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:16,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:16,683 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) [2024-10-23 22:36:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:16,867 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-23 22:36:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:16,868 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 [2024-10-23 22:36:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:16,869 INFO L225 Difference]: With dead ends: 57 [2024-10-23 22:36:16,869 INFO L226 Difference]: Without dead ends: 47 [2024-10-23 22:36:16,869 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 [2024-10-23 22:36:16,870 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 [2024-10-23 22:36:16,870 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] [2024-10-23 22:36:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-23 22:36:16,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-23 22:36:16,875 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) [2024-10-23 22:36:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-23 22:36:16,876 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-23 22:36:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:16,876 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-23 22:36:16,877 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) [2024-10-23 22:36:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-23 22:36:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-23 22:36:16,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:16,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:16,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 22:36:17,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:17,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:17,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-23 22:36:17,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:17,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900471925] [2024-10-23 22:36:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:17,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:36:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:17,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900471925] [2024-10-23 22:36:17,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900471925] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:17,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812863088] [2024-10-23 22:36:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:17,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:17,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:17,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:17,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 22:36:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:19,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 22:36:19,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:36:19,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:36:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812863088] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:19,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:19,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:36:19,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006120897] [2024-10-23 22:36:19,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:19,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:19,120 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) [2024-10-23 22:36:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:19,318 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-23 22:36:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:19,319 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 [2024-10-23 22:36:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:19,319 INFO L225 Difference]: With dead ends: 74 [2024-10-23 22:36:19,319 INFO L226 Difference]: Without dead ends: 48 [2024-10-23 22:36:19,320 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 [2024-10-23 22:36:19,321 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 [2024-10-23 22:36:19,321 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] [2024-10-23 22:36:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-23 22:36:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-23 22:36:19,328 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) [2024-10-23 22:36:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-23 22:36:19,329 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-23 22:36:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:19,329 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-23 22:36:19,329 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) [2024-10-23 22:36:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-23 22:36:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-23 22:36:19,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:19,333 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] [2024-10-23 22:36:19,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 22:36:19,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:19,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:19,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:19,535 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-23 22:36:19,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:19,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891864722] [2024-10-23 22:36:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:19,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:36:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891864722] [2024-10-23 22:36:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891864722] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207288331] [2024-10-23 22:36:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:20,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:20,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:20,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:20,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 22:36:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:21,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:21,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:36:21,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:36:21,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207288331] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:21,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:21,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:36:21,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190076816] [2024-10-23 22:36:21,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:21,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:21,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:21,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:21,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:36:21,387 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) [2024-10-23 22:36:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:21,629 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-23 22:36:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:21,630 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 [2024-10-23 22:36:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:21,630 INFO L225 Difference]: With dead ends: 64 [2024-10-23 22:36:21,630 INFO L226 Difference]: Without dead ends: 49 [2024-10-23 22:36:21,631 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 [2024-10-23 22:36:21,631 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 [2024-10-23 22:36:21,632 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] [2024-10-23 22:36:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-23 22:36:21,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-23 22:36:21,639 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) [2024-10-23 22:36:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-23 22:36:21,639 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-23 22:36:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:21,640 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-23 22:36:21,640 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) [2024-10-23 22:36:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-23 22:36:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 22:36:21,643 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:21,643 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] [2024-10-23 22:36:21,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 22:36:21,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:21,844 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:21,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:21,844 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-23 22:36:21,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:21,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938147306] [2024-10-23 22:36:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:21,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:36:22,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:22,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938147306] [2024-10-23 22:36:22,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938147306] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:22,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835105782] [2024-10-23 22:36:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:22,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:22,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:22,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:22,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 22:36:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:23,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:23,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:36:23,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:36:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835105782] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:23,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:23,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:36:23,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52961188] [2024-10-23 22:36:23,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:23,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:23,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:23,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:23,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:36:23,762 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) [2024-10-23 22:36:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:23,941 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-23 22:36:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:23,941 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 [2024-10-23 22:36:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:23,942 INFO L225 Difference]: With dead ends: 54 [2024-10-23 22:36:23,942 INFO L226 Difference]: Without dead ends: 50 [2024-10-23 22:36:23,942 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 [2024-10-23 22:36:23,943 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 [2024-10-23 22:36:23,943 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] [2024-10-23 22:36:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-23 22:36:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-23 22:36:23,946 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) [2024-10-23 22:36:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-23 22:36:23,947 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-23 22:36:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:23,947 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-23 22:36:23,947 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) [2024-10-23 22:36:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-23 22:36:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 22:36:23,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:23,948 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] [2024-10-23 22:36:23,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:24,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:24,149 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:24,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-23 22:36:24,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:24,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346831957] [2024-10-23 22:36:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:24,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:36:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346831957] [2024-10-23 22:36:24,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346831957] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396976824] [2024-10-23 22:36:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:24,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:24,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:24,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:24,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 22:36:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:25,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-23 22:36:25,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:36:25,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:36:25,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396976824] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:25,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:25,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-23 22:36:25,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214590601] [2024-10-23 22:36:25,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:25,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 22:36:25,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:25,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 22:36:25,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:36:25,958 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) [2024-10-23 22:36:26,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:26,234 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-10-23 22:36:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 22:36:26,235 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 [2024-10-23 22:36:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:26,236 INFO L225 Difference]: With dead ends: 95 [2024-10-23 22:36:26,236 INFO L226 Difference]: Without dead ends: 60 [2024-10-23 22:36:26,236 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 [2024-10-23 22:36:26,237 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 [2024-10-23 22:36:26,237 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] [2024-10-23 22:36:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-23 22:36:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-23 22:36:26,245 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) [2024-10-23 22:36:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-23 22:36:26,245 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 43 [2024-10-23 22:36:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:26,245 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-23 22:36:26,245 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) [2024-10-23 22:36:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-23 22:36:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-23 22:36:26,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:26,247 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] [2024-10-23 22:36:26,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 22:36:26,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:26,447 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:26,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 528894503, now seen corresponding path program 2 times [2024-10-23 22:36:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:26,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967138266] [2024-10-23 22:36:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:36:27,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:27,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967138266] [2024-10-23 22:36:27,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967138266] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:27,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573794032] [2024-10-23 22:36:27,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:36:27,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:27,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:27,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:27,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 22:36:28,152 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:36:28,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:28,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 5358 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-23 22:36:28,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:36:28,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-23 22:36:28,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573794032] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:28,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:28,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-23 22:36:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184430974] [2024-10-23 22:36:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:28,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:28,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:36:28,231 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) [2024-10-23 22:36:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:28,421 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-10-23 22:36:28,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:28,422 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 [2024-10-23 22:36:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:28,422 INFO L225 Difference]: With dead ends: 70 [2024-10-23 22:36:28,423 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 22:36:28,423 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 [2024-10-23 22:36:28,423 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 [2024-10-23 22:36:28,424 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] [2024-10-23 22:36:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 22:36:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-23 22:36:28,429 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) [2024-10-23 22:36:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-23 22:36:28,429 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 53 [2024-10-23 22:36:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:28,430 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-23 22:36:28,430 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) [2024-10-23 22:36:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-23 22:36:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-23 22:36:28,431 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:28,432 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] [2024-10-23 22:36:28,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:28,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:28,632 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:28,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 1 times [2024-10-23 22:36:28,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:28,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020835460] [2024-10-23 22:36:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:28,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 22:36:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020835460] [2024-10-23 22:36:29,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020835460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107152121] [2024-10-23 22:36:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:29,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:29,422 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:29,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 22:36:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:30,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:30,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:36:30,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 22:36:30,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107152121] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:30,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:30,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-23 22:36:30,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143490052] [2024-10-23 22:36:30,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:30,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 22:36:30,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:30,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 22:36:30,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:36:30,412 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) [2024-10-23 22:36:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:30,689 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-23 22:36:30,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 22:36:30,690 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 [2024-10-23 22:36:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:30,690 INFO L225 Difference]: With dead ends: 116 [2024-10-23 22:36:30,691 INFO L226 Difference]: Without dead ends: 71 [2024-10-23 22:36:30,691 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 [2024-10-23 22:36:30,694 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-10-23 22:36:30,694 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] [2024-10-23 22:36:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-23 22:36:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-23 22:36:30,700 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) [2024-10-23 22:36:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-23 22:36:30,701 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-23 22:36:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:30,701 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-23 22:36:30,702 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) [2024-10-23 22:36:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-23 22:36:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-23 22:36:30,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:30,704 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] [2024-10-23 22:36:30,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 22:36:30,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 22:36:30,904 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:30,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:30,905 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 2 times [2024-10-23 22:36:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757220909] [2024-10-23 22:36:30,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:30,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 22:36:31,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:31,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757220909] [2024-10-23 22:36:31,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757220909] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:31,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823660918] [2024-10-23 22:36:31,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:36:31,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:31,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:31,742 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:31,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 22:36:32,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:36:32,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:32,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 5437 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-23 22:36:32,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 22:36:32,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 22:36:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823660918] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:32,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:32,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 14 [2024-10-23 22:36:32,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281312471] [2024-10-23 22:36:32,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:32,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-23 22:36:32,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-23 22:36:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-23 22:36:32,857 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 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) [2024-10-23 22:36:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:33,237 INFO L93 Difference]: Finished difference Result 135 states and 182 transitions. [2024-10-23 22:36:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-23 22:36:33,238 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 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 [2024-10-23 22:36:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:33,238 INFO L225 Difference]: With dead ends: 135 [2024-10-23 22:36:33,238 INFO L226 Difference]: Without dead ends: 81 [2024-10-23 22:36:33,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-10-23 22:36:33,239 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 41 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:33,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 255 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:36:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-23 22:36:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-23 22:36:33,245 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) [2024-10-23 22:36:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2024-10-23 22:36:33,246 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 66 [2024-10-23 22:36:33,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:33,246 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2024-10-23 22:36:33,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 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) [2024-10-23 22:36:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2024-10-23 22:36:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-23 22:36:33,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:33,248 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] [2024-10-23 22:36:33,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:33,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:33,449 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:33,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1529729791, now seen corresponding path program 3 times [2024-10-23 22:36:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051744614] [2024-10-23 22:36:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-23 22:36:34,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:34,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051744614] [2024-10-23 22:36:34,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051744614] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:34,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155068578] [2024-10-23 22:36:34,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 22:36:34,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:34,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:34,362 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:34,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 22:36:35,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 22:36:35,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:35,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-23 22:36:35,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-23 22:36:35,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 22:36:35,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155068578] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:35,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:35,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 22:36:35,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194137734] [2024-10-23 22:36:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:35,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:35,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:35,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:36:35,727 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) [2024-10-23 22:36:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:35,916 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2024-10-23 22:36:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:35,916 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 [2024-10-23 22:36:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:35,918 INFO L225 Difference]: With dead ends: 124 [2024-10-23 22:36:35,918 INFO L226 Difference]: Without dead ends: 84 [2024-10-23 22:36:35,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:36:35,919 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:35,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-23 22:36:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-10-23 22:36:35,927 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) [2024-10-23 22:36:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions. [2024-10-23 22:36:35,931 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 70 [2024-10-23 22:36:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:35,932 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 108 transitions. [2024-10-23 22:36:35,932 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) [2024-10-23 22:36:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions. [2024-10-23 22:36:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-23 22:36:35,933 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:35,933 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] [2024-10-23 22:36:35,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:36,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 22:36:36,134 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:36,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1554558736, now seen corresponding path program 1 times [2024-10-23 22:36:36,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:36,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581312389] [2024-10-23 22:36:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:36,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 22:36:36,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581312389] [2024-10-23 22:36:36,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581312389] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726235375] [2024-10-23 22:36:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:36,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:36,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:36,982 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:36,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 22:36:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:38,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 5476 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:38,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 22:36:38,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:36:38,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726235375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:36:38,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 22:36:38,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-23 22:36:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073039376] [2024-10-23 22:36:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:38,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:36:38,061 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) [2024-10-23 22:36:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:38,258 INFO L93 Difference]: Finished difference Result 147 states and 197 transitions. [2024-10-23 22:36:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:38,259 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 [2024-10-23 22:36:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:38,259 INFO L225 Difference]: With dead ends: 147 [2024-10-23 22:36:38,259 INFO L226 Difference]: Without dead ends: 85 [2024-10-23 22:36:38,260 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 [2024-10-23 22:36:38,260 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-10-23 22:36:38,263 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] [2024-10-23 22:36:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-23 22:36:38,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-10-23 22:36:38,272 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) [2024-10-23 22:36:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-23 22:36:38,273 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 73 [2024-10-23 22:36:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:38,276 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-23 22:36:38,276 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) [2024-10-23 22:36:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-23 22:36:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-23 22:36:38,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:38,277 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] [2024-10-23 22:36:38,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:38,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 22:36:38,478 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:38,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1120259536, now seen corresponding path program 1 times [2024-10-23 22:36:38,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:38,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192146120] [2024-10-23 22:36:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-23 22:36:39,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:39,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192146120] [2024-10-23 22:36:39,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192146120] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:39,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289296735] [2024-10-23 22:36:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:39,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:39,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:39,302 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:39,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-23 22:36:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:40,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 5490 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:40,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-23 22:36:40,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 22:36:40,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289296735] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:40,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:40,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 22:36:40,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226455884] [2024-10-23 22:36:40,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:40,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:40,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:40,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:40,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:36:40,447 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) [2024-10-23 22:36:40,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:40,638 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2024-10-23 22:36:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:40,638 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 [2024-10-23 22:36:40,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:40,639 INFO L225 Difference]: With dead ends: 124 [2024-10-23 22:36:40,639 INFO L226 Difference]: Without dead ends: 84 [2024-10-23 22:36:40,639 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 [2024-10-23 22:36:40,640 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:40,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:40,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-23 22:36:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-23 22:36:40,645 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) [2024-10-23 22:36:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2024-10-23 22:36:40,646 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 76 [2024-10-23 22:36:40,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:40,646 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-10-23 22:36:40,647 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) [2024-10-23 22:36:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2024-10-23 22:36:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-23 22:36:40,647 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:40,648 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] [2024-10-23 22:36:40,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:40,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 22:36:40,848 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:40,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:40,849 INFO L85 PathProgramCache]: Analyzing trace with hash -604552515, now seen corresponding path program 1 times [2024-10-23 22:36:40,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:40,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790075141] [2024-10-23 22:36:40,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:40,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-23 22:36:41,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790075141] [2024-10-23 22:36:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790075141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50088576] [2024-10-23 22:36:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:41,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:41,629 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:41,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-23 22:36:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:42,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:42,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-23 22:36:42,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 22:36:42,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50088576] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:42,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:42,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 22:36:42,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743809647] [2024-10-23 22:36:42,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:42,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:42,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:36:42,782 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) [2024-10-23 22:36:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:42,970 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-10-23 22:36:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:42,970 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 [2024-10-23 22:36:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:42,971 INFO L225 Difference]: With dead ends: 107 [2024-10-23 22:36:42,971 INFO L226 Difference]: Without dead ends: 88 [2024-10-23 22:36:42,972 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 [2024-10-23 22:36:42,972 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 [2024-10-23 22:36:42,972 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] [2024-10-23 22:36:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-23 22:36:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-23 22:36:42,980 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) [2024-10-23 22:36:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2024-10-23 22:36:42,980 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 77 [2024-10-23 22:36:42,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:42,980 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2024-10-23 22:36:42,981 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) [2024-10-23 22:36:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2024-10-23 22:36:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-23 22:36:42,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:42,982 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] [2024-10-23 22:36:43,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:43,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 22:36:43,183 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:43,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:43,183 INFO L85 PathProgramCache]: Analyzing trace with hash -550947933, now seen corresponding path program 1 times [2024-10-23 22:36:43,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:43,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236017791] [2024-10-23 22:36:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:43,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 22:36:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236017791] [2024-10-23 22:36:43,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236017791] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517356197] [2024-10-23 22:36:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:43,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:43,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:43,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:43,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-23 22:36:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:44,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 5499 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-23 22:36:44,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-23 22:36:45,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 22:36:45,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517356197] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:45,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:45,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 9] total 16 [2024-10-23 22:36:45,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192171936] [2024-10-23 22:36:45,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:45,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:45,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:45,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:45,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-23 22:36:45,130 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) [2024-10-23 22:36:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:45,312 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2024-10-23 22:36:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:45,312 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 [2024-10-23 22:36:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:45,313 INFO L225 Difference]: With dead ends: 157 [2024-10-23 22:36:45,313 INFO L226 Difference]: Without dead ends: 89 [2024-10-23 22:36:45,313 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 [2024-10-23 22:36:45,314 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 [2024-10-23 22:36:45,314 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] [2024-10-23 22:36:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-23 22:36:45,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-23 22:36:45,321 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) [2024-10-23 22:36:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2024-10-23 22:36:45,322 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 79 [2024-10-23 22:36:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:45,322 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2024-10-23 22:36:45,323 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) [2024-10-23 22:36:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2024-10-23 22:36:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-23 22:36:45,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:45,324 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] [2024-10-23 22:36:45,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:45,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:45,525 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:45,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:45,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1880924804, now seen corresponding path program 1 times [2024-10-23 22:36:45,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:45,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110340564] [2024-10-23 22:36:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 22:36:46,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110340564] [2024-10-23 22:36:46,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110340564] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719311457] [2024-10-23 22:36:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:46,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:46,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:46,426 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:46,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-23 22:36:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:47,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 5502 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-23 22:36:47,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 22:36:47,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 22:36:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719311457] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:47,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-23 22:36:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949044705] [2024-10-23 22:36:47,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:47,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-23 22:36:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-23 22:36:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-23 22:36:47,552 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) [2024-10-23 22:36:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:48,113 INFO L93 Difference]: Finished difference Result 177 states and 238 transitions. [2024-10-23 22:36:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-23 22:36:48,114 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 [2024-10-23 22:36:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:48,115 INFO L225 Difference]: With dead ends: 177 [2024-10-23 22:36:48,115 INFO L226 Difference]: Without dead ends: 108 [2024-10-23 22:36:48,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-10-23 22:36:48,116 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 48 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:48,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 359 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 22:36:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-23 22:36:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-23 22:36:48,122 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) [2024-10-23 22:36:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2024-10-23 22:36:48,123 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 80 [2024-10-23 22:36:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:48,123 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2024-10-23 22:36:48,123 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) [2024-10-23 22:36:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2024-10-23 22:36:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-23 22:36:48,124 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:48,124 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] [2024-10-23 22:36:48,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-23 22:36:48,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 22:36:48,329 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:48,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash 213343619, now seen corresponding path program 2 times [2024-10-23 22:36:48,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:48,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772620438] [2024-10-23 22:36:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:48,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-23 22:36:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772620438] [2024-10-23 22:36:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772620438] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91256515] [2024-10-23 22:36:49,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:36:49,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:49,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:49,457 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:49,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-23 22:36:50,541 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:36:50,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:50,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 5613 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-23 22:36:50,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-10-23 22:36:50,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-10-23 22:36:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91256515] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:50,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:50,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 6] total 26 [2024-10-23 22:36:50,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326769891] [2024-10-23 22:36:50,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:50,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-23 22:36:50,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:50,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-23 22:36:50,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-10-23 22:36:50,784 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) [2024-10-23 22:36:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:51,475 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-10-23 22:36:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-23 22:36:51,476 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 [2024-10-23 22:36:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:51,477 INFO L225 Difference]: With dead ends: 206 [2024-10-23 22:36:51,477 INFO L226 Difference]: Without dead ends: 115 [2024-10-23 22:36:51,478 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 [2024-10-23 22:36:51,478 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 31 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:51,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 616 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 22:36:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-23 22:36:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-10-23 22:36:51,485 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) [2024-10-23 22:36:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 145 transitions. [2024-10-23 22:36:51,486 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 145 transitions. Word has length 99 [2024-10-23 22:36:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:51,486 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 145 transitions. [2024-10-23 22:36:51,486 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) [2024-10-23 22:36:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 145 transitions. [2024-10-23 22:36:51,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-23 22:36:51,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:51,487 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] [2024-10-23 22:36:51,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-23 22:36:51,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:51,687 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:51,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash -774915223, now seen corresponding path program 3 times [2024-10-23 22:36:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031418073] [2024-10-23 22:36:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-23 22:36:52,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:52,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031418073] [2024-10-23 22:36:52,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031418073] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:52,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661626052] [2024-10-23 22:36:52,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 22:36:52,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:52,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:52,883 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:52,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-23 22:36:54,116 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 22:36:54,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:54,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-23 22:36:54,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-23 22:36:54,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-23 22:36:54,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661626052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:54,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:54,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 22 [2024-10-23 22:36:54,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035173608] [2024-10-23 22:36:54,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:54,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-23 22:36:54,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-23 22:36:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-10-23 22:36:54,361 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) [2024-10-23 22:36:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:55,210 INFO L93 Difference]: Finished difference Result 179 states and 235 transitions. [2024-10-23 22:36:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-23 22:36:55,211 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 [2024-10-23 22:36:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:55,212 INFO L225 Difference]: With dead ends: 179 [2024-10-23 22:36:55,212 INFO L226 Difference]: Without dead ends: 131 [2024-10-23 22:36:55,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-10-23 22:36:55,215 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 43 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:55,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 842 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 22:36:55,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-23 22:36:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2024-10-23 22:36:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.2913385826771653) internal successors, (164), 127 states have internal predecessors, (164), 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) [2024-10-23 22:36:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 164 transitions. [2024-10-23 22:36:55,225 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 164 transitions. Word has length 104 [2024-10-23 22:36:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:55,225 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 164 transitions. [2024-10-23 22:36:55,225 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) [2024-10-23 22:36:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 164 transitions. [2024-10-23 22:36:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-23 22:36:55,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:55,226 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] [2024-10-23 22:36:55,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:55,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:55,427 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:55,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:55,428 INFO L85 PathProgramCache]: Analyzing trace with hash -47110729, now seen corresponding path program 4 times [2024-10-23 22:36:55,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:55,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992324312] [2024-10-23 22:36:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:55,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-23 22:36:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:56,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992324312] [2024-10-23 22:36:56,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992324312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:56,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802116453] [2024-10-23 22:36:56,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 22:36:56,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:56,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:56,707 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:56,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-23 22:36:57,782 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 22:36:57,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:57,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 5706 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 22:36:57,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-10-23 22:36:57,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-23 22:36:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802116453] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:58,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 7] total 25 [2024-10-23 22:36:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839141496] [2024-10-23 22:36:58,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:58,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-23 22:36:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-23 22:36:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-10-23 22:36:58,010 INFO L87 Difference]: Start difference. First operand 128 states and 164 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) [2024-10-23 22:36:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:58,735 INFO L93 Difference]: Finished difference Result 211 states and 279 transitions. [2024-10-23 22:36:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-23 22:36:58,736 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 [2024-10-23 22:36:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:58,737 INFO L225 Difference]: With dead ends: 211 [2024-10-23 22:36:58,737 INFO L226 Difference]: Without dead ends: 151 [2024-10-23 22:36:58,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2024-10-23 22:36:58,738 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 72 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:58,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 517 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 22:36:58,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-23 22:36:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2024-10-23 22:36:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.2972972972972974) internal successors, (192), 148 states have internal predecessors, (192), 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) [2024-10-23 22:36:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 192 transitions. [2024-10-23 22:36:58,748 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 192 transitions. Word has length 119 [2024-10-23 22:36:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:58,749 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 192 transitions. [2024-10-23 22:36:58,749 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) [2024-10-23 22:36:58,749 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 192 transitions. [2024-10-23 22:36:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-23 22:36:58,750 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:58,750 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] [2024-10-23 22:36:58,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:58,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:58,951 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:58,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1655509955, now seen corresponding path program 5 times [2024-10-23 22:36:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:58,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403272731] [2024-10-23 22:36:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:58,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-23 22:37:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403272731] [2024-10-23 22:37:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403272731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402134777] [2024-10-23 22:37:00,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 22:37:00,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:00,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:00,362 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:37:00,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process