./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.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.graphml --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 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:48:05,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:48:05,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:48:05,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:48:05,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:48:05,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:48:05,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:48:05,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:48:05,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:48:05,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:48:05,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:48:05,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:48:05,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:48:05,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:48:05,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:48:05,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:48:05,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:48:05,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:48:05,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:48:05,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:48:05,156 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:48:05,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:48:05,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:48:05,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:48:05,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:48:05,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:48:05,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:48:05,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:48:05,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:48:05,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:48:05,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:48:05,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:48:05,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:48:05,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:48:05,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:48:05,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:48:05,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:48:05,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:48:05,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:48:05,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:48:05,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:48:05,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:48:05,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:48:05,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:48:05,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:48:05,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:48:05,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:48:05,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:48:05,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:48:05,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:48:05,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:48:05,218 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:48:05,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:48:05,219 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:48:05,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:48:05,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:48:05,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:48:05,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:48:05,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:48:05,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:48:05,220 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:48:05,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:48:05,220 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:48:05,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:48:05,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:48:05,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:48:05,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:48:05,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:48:05,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:48:05,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:48:05,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:48:05,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:48:05,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:48:05,223 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:48:05,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:48:05,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:48:05,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2022-07-22 17:48:05,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:48:05,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:48:05,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:48:05,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:48:05,481 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:48:05,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-22 17:48:05,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8eee515/536f61a0eb194180897c4f26b9a1a98b/FLAG840edf89e [2022-07-22 17:48:05,982 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:48:05,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-22 17:48:05,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8eee515/536f61a0eb194180897c4f26b9a1a98b/FLAG840edf89e [2022-07-22 17:48:06,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8eee515/536f61a0eb194180897c4f26b9a1a98b [2022-07-22 17:48:06,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:48:06,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:48:06,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:48:06,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:48:06,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:48:06,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:06,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb4d9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06, skipping insertion in model container [2022-07-22 17:48:06,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:06,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:48:06,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:48:06,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-07-22 17:48:06,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:48:06,819 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:48:06,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-07-22 17:48:06,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:48:06,944 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:48:06,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06 WrapperNode [2022-07-22 17:48:06,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:48:06,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:48:06,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:48:06,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:48:06,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:06,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,032 INFO L137 Inliner]: procedures = 184, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2022-07-22 17:48:07,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:48:07,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:48:07,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:48:07,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:48:07,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:48:07,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:48:07,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:48:07,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:48:07,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (1/1) ... [2022-07-22 17:48:07,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:48:07,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:48:07,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 17:48:07,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 17:48:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 17:48:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-22 17:48:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-22 17:48:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-07-22 17:48:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-07-22 17:48:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 17:48:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 17:48:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-07-22 17:48:07,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-07-22 17:48:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:48:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 17:48:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 17:48:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-07-22 17:48:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-07-22 17:48:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-07-22 17:48:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-07-22 17:48:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-07-22 17:48:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-07-22 17:48:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 17:48:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-07-22 17:48:07,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-07-22 17:48:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 17:48:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-07-22 17:48:07,197 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-07-22 17:48:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:48:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-07-22 17:48:07,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-07-22 17:48:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-22 17:48:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:48:07,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:48:07,408 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:48:07,410 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:48:07,965 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:48:07,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:48:07,971 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 17:48:07,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:48:07 BoogieIcfgContainer [2022-07-22 17:48:07,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:48:07,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:48:07,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:48:07,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:48:07,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:48:06" (1/3) ... [2022-07-22 17:48:07,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5568b8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:48:07, skipping insertion in model container [2022-07-22 17:48:07,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:48:06" (2/3) ... [2022-07-22 17:48:07,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5568b8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:48:07, skipping insertion in model container [2022-07-22 17:48:07,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:48:07" (3/3) ... [2022-07-22 17:48:07,979 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-07-22 17:48:07,990 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:48:07,990 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:48:08,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:48:08,035 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@241bfab8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28909215 [2022-07-22 17:48:08,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:48:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-22 17:48:08,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 17:48:08,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:08,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:08,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash -965536278, now seen corresponding path program 1 times [2022-07-22 17:48:08,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:08,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391591779] [2022-07-22 17:48:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:08,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:08,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:08,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:08,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391591779] [2022-07-22 17:48:08,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391591779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:08,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:08,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:48:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376493888] [2022-07-22 17:48:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:08,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:48:08,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:08,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:48:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:48:08,612 INFO L87 Difference]: Start difference. First operand has 132 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:48:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:09,794 INFO L93 Difference]: Finished difference Result 319 states and 468 transitions. [2022-07-22 17:48:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:48:09,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-07-22 17:48:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:09,831 INFO L225 Difference]: With dead ends: 319 [2022-07-22 17:48:09,831 INFO L226 Difference]: Without dead ends: 169 [2022-07-22 17:48:09,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:48:09,839 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 144 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:09,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 930 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:48:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-22 17:48:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 133. [2022-07-22 17:48:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 96 states have internal predecessors, (123), 30 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-22 17:48:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2022-07-22 17:48:09,894 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 19 [2022-07-22 17:48:09,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:09,897 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2022-07-22 17:48:09,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:48:09,898 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2022-07-22 17:48:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 17:48:09,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:09,903 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:48:09,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:48:09,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1463372220, now seen corresponding path program 1 times [2022-07-22 17:48:09,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:09,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113151655] [2022-07-22 17:48:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:10,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:10,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113151655] [2022-07-22 17:48:10,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113151655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:10,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:10,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:48:10,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633445989] [2022-07-22 17:48:10,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:10,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:48:10,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:48:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:48:10,074 INFO L87 Difference]: Start difference. First operand 133 states and 179 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:48:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:10,580 INFO L93 Difference]: Finished difference Result 293 states and 423 transitions. [2022-07-22 17:48:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:48:10,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-07-22 17:48:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:10,588 INFO L225 Difference]: With dead ends: 293 [2022-07-22 17:48:10,588 INFO L226 Difference]: Without dead ends: 175 [2022-07-22 17:48:10,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:10,591 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 160 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:10,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 495 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:48:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-22 17:48:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 138. [2022-07-22 17:48:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 100 states have internal predecessors, (129), 30 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-22 17:48:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2022-07-22 17:48:10,616 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 35 [2022-07-22 17:48:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:10,617 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2022-07-22 17:48:10,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:48:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2022-07-22 17:48:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 17:48:10,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:10,619 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:48:10,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:48:10,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1541012852, now seen corresponding path program 1 times [2022-07-22 17:48:10,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:10,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331000745] [2022-07-22 17:48:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:10,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:10,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:10,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331000745] [2022-07-22 17:48:10,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331000745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:10,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:10,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:10,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048196570] [2022-07-22 17:48:10,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:10,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:10,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:10,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:10,846 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:48:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:12,133 INFO L93 Difference]: Finished difference Result 339 states and 497 transitions. [2022-07-22 17:48:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:48:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-07-22 17:48:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:12,142 INFO L225 Difference]: With dead ends: 339 [2022-07-22 17:48:12,142 INFO L226 Difference]: Without dead ends: 216 [2022-07-22 17:48:12,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:48:12,147 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 148 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:12,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1100 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:48:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-22 17:48:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 208. [2022-07-22 17:48:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 147 states have (on average 1.2789115646258504) internal successors, (188), 152 states have internal predecessors, (188), 40 states have call successors, (40), 13 states have call predecessors, (40), 20 states have return successors, (63), 42 states have call predecessors, (63), 36 states have call successors, (63) [2022-07-22 17:48:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-07-22 17:48:12,187 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 36 [2022-07-22 17:48:12,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:12,187 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-07-22 17:48:12,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:48:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-07-22 17:48:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 17:48:12,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:12,190 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:48:12,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:48:12,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:12,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1282847414, now seen corresponding path program 1 times [2022-07-22 17:48:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:12,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735492336] [2022-07-22 17:48:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:12,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:12,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:12,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735492336] [2022-07-22 17:48:12,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735492336] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:48:12,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976325869] [2022-07-22 17:48:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:12,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:48:12,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:48:12,499 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) [2022-07-22 17:48:12,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:48:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:12,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-22 17:48:12,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:48:12,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 17:48:12,917 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-22 17:48:12,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-22 17:48:12,993 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 17:48:12,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-07-22 17:48:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:13,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:48:14,102 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2022-07-22 17:48:15,301 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) 0 ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset) ~sys_state_s~0~AS_IDLE))) is different from false [2022-07-22 17:48:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:17,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976325869] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 17:48:17,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 17:48:17,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 11] total 26 [2022-07-22 17:48:17,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240555846] [2022-07-22 17:48:17,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:17,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:48:17,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:48:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=453, Unknown=3, NotChecked=90, Total=650 [2022-07-22 17:48:17,281 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:48:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:23,960 INFO L93 Difference]: Finished difference Result 439 states and 658 transitions. [2022-07-22 17:48:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:48:23,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-07-22 17:48:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:23,965 INFO L225 Difference]: With dead ends: 439 [2022-07-22 17:48:23,965 INFO L226 Difference]: Without dead ends: 246 [2022-07-22 17:48:23,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=125, Invalid=635, Unknown=4, NotChecked=106, Total=870 [2022-07-22 17:48:23,969 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 35 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:23,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1029 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 185 Unchecked, 0.1s Time] [2022-07-22 17:48:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-22 17:48:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 237. [2022-07-22 17:48:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 169 states have (on average 1.2781065088757397) internal successors, (216), 172 states have internal predecessors, (216), 45 states have call successors, (45), 15 states have call predecessors, (45), 22 states have return successors, (83), 49 states have call predecessors, (83), 41 states have call successors, (83) [2022-07-22 17:48:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 344 transitions. [2022-07-22 17:48:24,009 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 344 transitions. Word has length 36 [2022-07-22 17:48:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:24,009 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 344 transitions. [2022-07-22 17:48:24,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:48:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 344 transitions. [2022-07-22 17:48:24,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 17:48:24,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:24,012 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:48:24,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:48:24,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:48:24,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:24,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2015047529, now seen corresponding path program 1 times [2022-07-22 17:48:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:24,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947653407] [2022-07-22 17:48:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:24,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947653407] [2022-07-22 17:48:24,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947653407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:24,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:24,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438707294] [2022-07-22 17:48:24,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:24,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:24,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:24,438 INFO L87 Difference]: Start difference. First operand 237 states and 344 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:48:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:26,310 INFO L93 Difference]: Finished difference Result 624 states and 972 transitions. [2022-07-22 17:48:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 17:48:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-07-22 17:48:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:26,314 INFO L225 Difference]: With dead ends: 624 [2022-07-22 17:48:26,314 INFO L226 Difference]: Without dead ends: 400 [2022-07-22 17:48:26,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2022-07-22 17:48:26,317 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 292 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:26,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1094 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 17:48:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-22 17:48:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 367. [2022-07-22 17:48:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 265 states have (on average 1.260377358490566) internal successors, (334), 264 states have internal predecessors, (334), 60 states have call successors, (60), 22 states have call predecessors, (60), 41 states have return successors, (155), 80 states have call predecessors, (155), 56 states have call successors, (155) [2022-07-22 17:48:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 549 transitions. [2022-07-22 17:48:26,343 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 549 transitions. Word has length 36 [2022-07-22 17:48:26,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:26,344 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 549 transitions. [2022-07-22 17:48:26,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:48:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 549 transitions. [2022-07-22 17:48:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 17:48:26,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:26,346 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:48:26,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:48:26,346 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2005278688, now seen corresponding path program 1 times [2022-07-22 17:48:26,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:26,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972615539] [2022-07-22 17:48:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 17:48:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:48:26,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:26,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972615539] [2022-07-22 17:48:26,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972615539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:26,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:26,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:48:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915155507] [2022-07-22 17:48:26,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:26,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:48:26,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:48:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:48:26,494 INFO L87 Difference]: Start difference. First operand 367 states and 549 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:48:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:27,244 INFO L93 Difference]: Finished difference Result 743 states and 1107 transitions. [2022-07-22 17:48:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:48:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-22 17:48:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:27,249 INFO L225 Difference]: With dead ends: 743 [2022-07-22 17:48:27,249 INFO L226 Difference]: Without dead ends: 386 [2022-07-22 17:48:27,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:48:27,252 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 108 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:27,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 804 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:48:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-07-22 17:48:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 370. [2022-07-22 17:48:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 268 states have (on average 1.257462686567164) internal successors, (337), 266 states have internal predecessors, (337), 60 states have call successors, (60), 23 states have call predecessors, (60), 41 states have return successors, (155), 80 states have call predecessors, (155), 56 states have call successors, (155) [2022-07-22 17:48:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 552 transitions. [2022-07-22 17:48:27,281 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 552 transitions. Word has length 38 [2022-07-22 17:48:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:27,282 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 552 transitions. [2022-07-22 17:48:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:48:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 552 transitions. [2022-07-22 17:48:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 17:48:27,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:27,286 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:48:27,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:48:27,286 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:27,287 INFO L85 PathProgramCache]: Analyzing trace with hash -773790690, now seen corresponding path program 1 times [2022-07-22 17:48:27,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:27,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222445874] [2022-07-22 17:48:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:27,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 17:48:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:27,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222445874] [2022-07-22 17:48:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222445874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493151296] [2022-07-22 17:48:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:27,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:27,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:27,483 INFO L87 Difference]: Start difference. First operand 370 states and 552 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:48:28,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:28,323 INFO L93 Difference]: Finished difference Result 762 states and 1129 transitions. [2022-07-22 17:48:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:48:28,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-22 17:48:28,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:28,327 INFO L225 Difference]: With dead ends: 762 [2022-07-22 17:48:28,327 INFO L226 Difference]: Without dead ends: 390 [2022-07-22 17:48:28,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:48:28,330 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 228 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:28,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 979 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:48:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-07-22 17:48:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2022-07-22 17:48:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 271 states have (on average 1.2546125461254614) internal successors, (340), 269 states have internal predecessors, (340), 62 states have call successors, (62), 24 states have call predecessors, (62), 41 states have return successors, (156), 81 states have call predecessors, (156), 57 states have call successors, (156) [2022-07-22 17:48:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 558 transitions. [2022-07-22 17:48:28,349 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 558 transitions. Word has length 38 [2022-07-22 17:48:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:28,350 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 558 transitions. [2022-07-22 17:48:28,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:48:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 558 transitions. [2022-07-22 17:48:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 17:48:28,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:28,352 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:48:28,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:48:28,352 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:28,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:28,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1418952031, now seen corresponding path program 1 times [2022-07-22 17:48:28,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:28,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035849466] [2022-07-22 17:48:28,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:28,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:48:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:48:28,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:28,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035849466] [2022-07-22 17:48:28,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035849466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:28,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:28,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:28,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834828209] [2022-07-22 17:48:28,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:28,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:28,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:28,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:28,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:28,560 INFO L87 Difference]: Start difference. First operand 375 states and 558 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:48:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:29,331 INFO L93 Difference]: Finished difference Result 754 states and 1117 transitions. [2022-07-22 17:48:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:48:29,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-07-22 17:48:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:29,334 INFO L225 Difference]: With dead ends: 754 [2022-07-22 17:48:29,335 INFO L226 Difference]: Without dead ends: 385 [2022-07-22 17:48:29,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:48:29,337 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 354 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:29,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 618 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:48:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-22 17:48:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 367. [2022-07-22 17:48:29,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 266 states have (on average 1.2518796992481203) internal successors, (333), 262 states have internal predecessors, (333), 59 states have call successors, (59), 24 states have call predecessors, (59), 41 states have return successors, (156), 80 states have call predecessors, (156), 57 states have call successors, (156) [2022-07-22 17:48:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 548 transitions. [2022-07-22 17:48:29,363 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 548 transitions. Word has length 39 [2022-07-22 17:48:29,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:29,363 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 548 transitions. [2022-07-22 17:48:29,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:48:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 548 transitions. [2022-07-22 17:48:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 17:48:29,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:29,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:29,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:48:29,366 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:29,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1936715933, now seen corresponding path program 1 times [2022-07-22 17:48:29,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:29,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559284445] [2022-07-22 17:48:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:29,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:29,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:48:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:48:29,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559284445] [2022-07-22 17:48:29,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559284445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:29,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:29,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:48:29,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879620898] [2022-07-22 17:48:29,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:29,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:48:29,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:29,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:48:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:48:29,504 INFO L87 Difference]: Start difference. First operand 367 states and 548 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 17:48:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:29,995 INFO L93 Difference]: Finished difference Result 744 states and 1229 transitions. [2022-07-22 17:48:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:48:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2022-07-22 17:48:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:29,999 INFO L225 Difference]: With dead ends: 744 [2022-07-22 17:48:29,999 INFO L226 Difference]: Without dead ends: 392 [2022-07-22 17:48:30,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:30,003 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 169 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:30,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 476 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:48:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-22 17:48:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 379. [2022-07-22 17:48:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 275 states have (on average 1.2581818181818183) internal successors, (346), 272 states have internal predecessors, (346), 59 states have call successors, (59), 26 states have call predecessors, (59), 44 states have return successors, (156), 80 states have call predecessors, (156), 57 states have call successors, (156) [2022-07-22 17:48:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 561 transitions. [2022-07-22 17:48:30,027 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 561 transitions. Word has length 53 [2022-07-22 17:48:30,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:30,028 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 561 transitions. [2022-07-22 17:48:30,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 17:48:30,028 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 561 transitions. [2022-07-22 17:48:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 17:48:30,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:30,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:30,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:48:30,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:30,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash -821329833, now seen corresponding path program 1 times [2022-07-22 17:48:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:30,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199288372] [2022-07-22 17:48:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:30,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:48:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:48:30,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:30,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199288372] [2022-07-22 17:48:30,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199288372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:30,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:30,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:48:30,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508722640] [2022-07-22 17:48:30,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:30,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:48:30,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:30,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:48:30,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:48:30,171 INFO L87 Difference]: Start difference. First operand 379 states and 561 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 17:48:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:31,094 INFO L93 Difference]: Finished difference Result 891 states and 1443 transitions. [2022-07-22 17:48:31,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:48:31,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2022-07-22 17:48:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:31,099 INFO L225 Difference]: With dead ends: 891 [2022-07-22 17:48:31,099 INFO L226 Difference]: Without dead ends: 527 [2022-07-22 17:48:31,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-07-22 17:48:31,102 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 254 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:31,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1129 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:48:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-07-22 17:48:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 488. [2022-07-22 17:48:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 359 states have (on average 1.2367688022284122) internal successors, (444), 349 states have internal predecessors, (444), 67 states have call successors, (67), 30 states have call predecessors, (67), 61 states have return successors, (223), 108 states have call predecessors, (223), 65 states have call successors, (223) [2022-07-22 17:48:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 734 transitions. [2022-07-22 17:48:31,133 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 734 transitions. Word has length 54 [2022-07-22 17:48:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:31,133 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 734 transitions. [2022-07-22 17:48:31,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 17:48:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 734 transitions. [2022-07-22 17:48:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 17:48:31,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:31,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:48:31,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash 686221976, now seen corresponding path program 1 times [2022-07-22 17:48:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:31,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636900210] [2022-07-22 17:48:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:31,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:31,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:48:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 17:48:31,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636900210] [2022-07-22 17:48:31,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636900210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:31,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:31,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:31,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389891319] [2022-07-22 17:48:31,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:31,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:31,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:31,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:31,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:31,318 INFO L87 Difference]: Start difference. First operand 488 states and 734 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:48:32,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:32,683 INFO L93 Difference]: Finished difference Result 1109 states and 1933 transitions. [2022-07-22 17:48:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 17:48:32,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 54 [2022-07-22 17:48:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:32,690 INFO L225 Difference]: With dead ends: 1109 [2022-07-22 17:48:32,690 INFO L226 Difference]: Without dead ends: 632 [2022-07-22 17:48:32,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-07-22 17:48:32,695 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 336 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:32,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 898 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:48:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-07-22 17:48:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 585. [2022-07-22 17:48:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 437 states have (on average 1.240274599542334) internal successors, (542), 419 states have internal predecessors, (542), 73 states have call successors, (73), 36 states have call predecessors, (73), 74 states have return successors, (319), 129 states have call predecessors, (319), 71 states have call successors, (319) [2022-07-22 17:48:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 934 transitions. [2022-07-22 17:48:32,731 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 934 transitions. Word has length 54 [2022-07-22 17:48:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:32,732 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 934 transitions. [2022-07-22 17:48:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:48:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 934 transitions. [2022-07-22 17:48:32,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 17:48:32,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:32,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-22 17:48:32,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:48:32,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:32,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2020535424, now seen corresponding path program 1 times [2022-07-22 17:48:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:32,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250874543] [2022-07-22 17:48:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:32,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:48:32,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:32,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250874543] [2022-07-22 17:48:32,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250874543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:32,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:32,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:32,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089646703] [2022-07-22 17:48:32,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:32,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:32,913 INFO L87 Difference]: Start difference. First operand 585 states and 934 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 17:48:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:34,029 INFO L93 Difference]: Finished difference Result 1233 states and 2204 transitions. [2022-07-22 17:48:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:48:34,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 55 [2022-07-22 17:48:34,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:34,036 INFO L225 Difference]: With dead ends: 1233 [2022-07-22 17:48:34,036 INFO L226 Difference]: Without dead ends: 666 [2022-07-22 17:48:34,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:48:34,043 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 124 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:34,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1182 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:48:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-22 17:48:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 641. [2022-07-22 17:48:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 479 states have (on average 1.2359081419624216) internal successors, (592), 462 states have internal predecessors, (592), 79 states have call successors, (79), 38 states have call predecessors, (79), 82 states have return successors, (351), 140 states have call predecessors, (351), 77 states have call successors, (351) [2022-07-22 17:48:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1022 transitions. [2022-07-22 17:48:34,084 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1022 transitions. Word has length 55 [2022-07-22 17:48:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:34,085 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1022 transitions. [2022-07-22 17:48:34,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 17:48:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1022 transitions. [2022-07-22 17:48:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 17:48:34,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:34,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:34,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:48:34,088 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:34,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash -758533954, now seen corresponding path program 1 times [2022-07-22 17:48:34,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:34,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013935040] [2022-07-22 17:48:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:48:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:48:34,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:34,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013935040] [2022-07-22 17:48:34,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013935040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:34,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:34,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:48:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715657111] [2022-07-22 17:48:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:34,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:48:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:48:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:48:34,236 INFO L87 Difference]: Start difference. First operand 641 states and 1022 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 17:48:35,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:35,151 INFO L93 Difference]: Finished difference Result 1619 states and 2966 transitions. [2022-07-22 17:48:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:48:35,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 55 [2022-07-22 17:48:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:35,163 INFO L225 Difference]: With dead ends: 1619 [2022-07-22 17:48:35,163 INFO L226 Difference]: Without dead ends: 996 [2022-07-22 17:48:35,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:48:35,170 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 283 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:35,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1121 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:48:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-07-22 17:48:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 959. [2022-07-22 17:48:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 723 states have (on average 1.2005532503457814) internal successors, (868), 682 states have internal predecessors, (868), 100 states have call successors, (100), 53 states have call predecessors, (100), 135 states have return successors, (631), 223 states have call predecessors, (631), 98 states have call successors, (631) [2022-07-22 17:48:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1599 transitions. [2022-07-22 17:48:35,256 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1599 transitions. Word has length 55 [2022-07-22 17:48:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:35,256 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1599 transitions. [2022-07-22 17:48:35,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 17:48:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1599 transitions. [2022-07-22 17:48:35,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 17:48:35,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:35,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-22 17:48:35,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:48:35,259 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 47417981, now seen corresponding path program 1 times [2022-07-22 17:48:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:35,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203926397] [2022-07-22 17:48:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:35,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:48:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 17:48:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:35,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203926397] [2022-07-22 17:48:35,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203926397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:35,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:35,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72207640] [2022-07-22 17:48:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:35,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:35,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:35,371 INFO L87 Difference]: Start difference. First operand 959 states and 1599 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:48:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:36,345 INFO L93 Difference]: Finished difference Result 2005 states and 3867 transitions. [2022-07-22 17:48:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:48:36,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2022-07-22 17:48:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:36,372 INFO L225 Difference]: With dead ends: 2005 [2022-07-22 17:48:36,372 INFO L226 Difference]: Without dead ends: 1064 [2022-07-22 17:48:36,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:48:36,380 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 283 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:36,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 988 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:48:36,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-07-22 17:48:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1011. [2022-07-22 17:48:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 760 states have (on average 1.1921052631578948) internal successors, (906), 723 states have internal predecessors, (906), 105 states have call successors, (105), 55 states have call predecessors, (105), 145 states have return successors, (640), 232 states have call predecessors, (640), 103 states have call successors, (640) [2022-07-22 17:48:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1651 transitions. [2022-07-22 17:48:36,450 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1651 transitions. Word has length 55 [2022-07-22 17:48:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:36,451 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1651 transitions. [2022-07-22 17:48:36,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:48:36,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1651 transitions. [2022-07-22 17:48:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 17:48:36,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:36,453 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:36,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:48:36,454 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:36,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2077142114, now seen corresponding path program 1 times [2022-07-22 17:48:36,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:36,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445467415] [2022-07-22 17:48:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:36,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:36,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:48:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 17:48:36,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:36,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445467415] [2022-07-22 17:48:36,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445467415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:36,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:36,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:48:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906520593] [2022-07-22 17:48:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:36,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:48:36,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:48:36,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:48:36,619 INFO L87 Difference]: Start difference. First operand 1011 states and 1651 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:48:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:37,436 INFO L93 Difference]: Finished difference Result 2001 states and 3742 transitions. [2022-07-22 17:48:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:48:37,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-22 17:48:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:37,446 INFO L225 Difference]: With dead ends: 2001 [2022-07-22 17:48:37,446 INFO L226 Difference]: Without dead ends: 1008 [2022-07-22 17:48:37,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:48:37,454 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 231 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:37,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 815 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:48:37,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-22 17:48:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 984. [2022-07-22 17:48:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 744 states have (on average 1.1935483870967742) internal successors, (888), 706 states have internal predecessors, (888), 100 states have call successors, (100), 55 states have call predecessors, (100), 139 states have return successors, (603), 222 states have call predecessors, (603), 98 states have call successors, (603) [2022-07-22 17:48:37,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1591 transitions. [2022-07-22 17:48:37,513 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1591 transitions. Word has length 56 [2022-07-22 17:48:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:37,514 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1591 transitions. [2022-07-22 17:48:37,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:48:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1591 transitions. [2022-07-22 17:48:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 17:48:37,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:37,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:37,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:48:37,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:37,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1561977805, now seen corresponding path program 1 times [2022-07-22 17:48:37,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:37,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24502258] [2022-07-22 17:48:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:37,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:48:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:48:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:37,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24502258] [2022-07-22 17:48:37,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24502258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:37,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:37,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:48:37,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824018747] [2022-07-22 17:48:37,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:37,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:48:37,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:48:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:48:37,667 INFO L87 Difference]: Start difference. First operand 984 states and 1591 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:48:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:38,230 INFO L93 Difference]: Finished difference Result 1996 states and 3804 transitions. [2022-07-22 17:48:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:48:38,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2022-07-22 17:48:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:38,240 INFO L225 Difference]: With dead ends: 1996 [2022-07-22 17:48:38,240 INFO L226 Difference]: Without dead ends: 1030 [2022-07-22 17:48:38,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:48:38,248 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 137 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:38,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 674 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:48:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-22 17:48:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 988. [2022-07-22 17:48:38,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 747 states have (on average 1.1927710843373494) internal successors, (891), 709 states have internal predecessors, (891), 100 states have call successors, (100), 55 states have call predecessors, (100), 140 states have return successors, (606), 223 states have call predecessors, (606), 98 states have call successors, (606) [2022-07-22 17:48:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1597 transitions. [2022-07-22 17:48:38,312 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1597 transitions. Word has length 59 [2022-07-22 17:48:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:38,313 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1597 transitions. [2022-07-22 17:48:38,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:48:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1597 transitions. [2022-07-22 17:48:38,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 17:48:38,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:38,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:38,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:48:38,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1151067067, now seen corresponding path program 1 times [2022-07-22 17:48:38,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:38,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247439900] [2022-07-22 17:48:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:38,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:38,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:48:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:48:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:48:38,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:38,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247439900] [2022-07-22 17:48:38,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247439900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:38,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:38,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:38,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671702826] [2022-07-22 17:48:38,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:38,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:38,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:38,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:38,474 INFO L87 Difference]: Start difference. First operand 988 states and 1597 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:39,348 INFO L93 Difference]: Finished difference Result 2039 states and 3919 transitions. [2022-07-22 17:48:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:48:39,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-07-22 17:48:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:39,359 INFO L225 Difference]: With dead ends: 2039 [2022-07-22 17:48:39,359 INFO L226 Difference]: Without dead ends: 1069 [2022-07-22 17:48:39,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:48:39,367 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 182 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:39,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 840 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:48:39,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-07-22 17:48:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 954. [2022-07-22 17:48:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 722 states have (on average 1.1994459833795015) internal successors, (866), 693 states have internal predecessors, (866), 101 states have call successors, (101), 56 states have call predecessors, (101), 130 states have return successors, (573), 204 states have call predecessors, (573), 99 states have call successors, (573) [2022-07-22 17:48:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1540 transitions. [2022-07-22 17:48:39,443 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1540 transitions. Word has length 60 [2022-07-22 17:48:39,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:39,444 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1540 transitions. [2022-07-22 17:48:39,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1540 transitions. [2022-07-22 17:48:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 17:48:39,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:39,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:48:39,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash -756700281, now seen corresponding path program 1 times [2022-07-22 17:48:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:39,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864393198] [2022-07-22 17:48:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:39,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:48:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:48:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:48:39,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:39,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864393198] [2022-07-22 17:48:39,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864393198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:39,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:39,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:48:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853762629] [2022-07-22 17:48:39,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:39,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:48:39,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:48:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:48:39,641 INFO L87 Difference]: Start difference. First operand 954 states and 1540 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:48:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:40,126 INFO L93 Difference]: Finished difference Result 1920 states and 3608 transitions. [2022-07-22 17:48:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:48:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2022-07-22 17:48:40,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:40,135 INFO L225 Difference]: With dead ends: 1920 [2022-07-22 17:48:40,135 INFO L226 Difference]: Without dead ends: 984 [2022-07-22 17:48:40,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:48:40,142 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 201 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:40,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 609 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:48:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-07-22 17:48:40,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 956. [2022-07-22 17:48:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 724 states have (on average 1.1988950276243093) internal successors, (868), 694 states have internal predecessors, (868), 101 states have call successors, (101), 56 states have call predecessors, (101), 130 states have return successors, (573), 205 states have call predecessors, (573), 99 states have call successors, (573) [2022-07-22 17:48:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1542 transitions. [2022-07-22 17:48:40,201 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1542 transitions. Word has length 60 [2022-07-22 17:48:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:40,201 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1542 transitions. [2022-07-22 17:48:40,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:48:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1542 transitions. [2022-07-22 17:48:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 17:48:40,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:40,204 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:40,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:48:40,204 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash 682002064, now seen corresponding path program 1 times [2022-07-22 17:48:40,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:40,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180346548] [2022-07-22 17:48:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:40,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:40,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:40,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:48:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:48:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 17:48:40,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:40,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180346548] [2022-07-22 17:48:40,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180346548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:40,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:40,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:40,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393271974] [2022-07-22 17:48:40,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:40,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:40,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:40,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:40,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:40,379 INFO L87 Difference]: Start difference. First operand 956 states and 1542 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-22 17:48:41,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:41,323 INFO L93 Difference]: Finished difference Result 2007 states and 3938 transitions. [2022-07-22 17:48:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:48:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-07-22 17:48:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:41,336 INFO L225 Difference]: With dead ends: 2007 [2022-07-22 17:48:41,336 INFO L226 Difference]: Without dead ends: 1069 [2022-07-22 17:48:41,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:48:41,343 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 110 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:41,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 890 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:48:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-07-22 17:48:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1035. [2022-07-22 17:48:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 784 states have (on average 1.2066326530612246) internal successors, (946), 759 states have internal predecessors, (946), 115 states have call successors, (115), 62 states have call predecessors, (115), 135 states have return successors, (690), 213 states have call predecessors, (690), 113 states have call successors, (690) [2022-07-22 17:48:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1751 transitions. [2022-07-22 17:48:41,444 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1751 transitions. Word has length 65 [2022-07-22 17:48:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:41,445 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1751 transitions. [2022-07-22 17:48:41,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-22 17:48:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1751 transitions. [2022-07-22 17:48:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 17:48:41,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:41,448 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:48:41,448 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1397073829, now seen corresponding path program 1 times [2022-07-22 17:48:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:41,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286240011] [2022-07-22 17:48:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:41,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:48:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:48:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:48:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:48:41,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286240011] [2022-07-22 17:48:41,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286240011] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:48:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902261833] [2022-07-22 17:48:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:41,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:48:41,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:48:41,640 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) [2022-07-22 17:48:41,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:48:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:42,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:48:42,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:48:42,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 17:48:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 17:48:42,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:48:42,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-22 17:48:42,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-22 17:48:42,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-22 17:48:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 17:48:42,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902261833] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:48:42,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:48:42,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2022-07-22 17:48:42,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771540901] [2022-07-22 17:48:42,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:48:42,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 17:48:42,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:42,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 17:48:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:48:42,245 INFO L87 Difference]: Start difference. First operand 1035 states and 1751 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 7 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 17:48:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:43,230 INFO L93 Difference]: Finished difference Result 2268 states and 4455 transitions. [2022-07-22 17:48:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:48:43,231 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 7 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-07-22 17:48:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:43,243 INFO L225 Difference]: With dead ends: 2268 [2022-07-22 17:48:43,243 INFO L226 Difference]: Without dead ends: 1251 [2022-07-22 17:48:43,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:48:43,251 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 193 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:43,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1029 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:48:43,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-07-22 17:48:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1209. [2022-07-22 17:48:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 918 states have (on average 1.1808278867102397) internal successors, (1084), 874 states have internal predecessors, (1084), 121 states have call successors, (121), 64 states have call predecessors, (121), 169 states have return successors, (892), 270 states have call predecessors, (892), 119 states have call successors, (892) [2022-07-22 17:48:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 2097 transitions. [2022-07-22 17:48:43,341 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 2097 transitions. Word has length 67 [2022-07-22 17:48:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:43,342 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 2097 transitions. [2022-07-22 17:48:43,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 7 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 17:48:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 2097 transitions. [2022-07-22 17:48:43,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 17:48:43,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:43,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:43,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 17:48:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-07-22 17:48:43,552 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:43,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1020751739, now seen corresponding path program 1 times [2022-07-22 17:48:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:43,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171502264] [2022-07-22 17:48:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:48:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:43,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:48:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 17:48:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:48:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:43,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171502264] [2022-07-22 17:48:43,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171502264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:43,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:43,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:48:43,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891682554] [2022-07-22 17:48:43,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:43,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:48:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:43,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:48:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:48:43,779 INFO L87 Difference]: Start difference. First operand 1209 states and 2097 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-22 17:48:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:44,902 INFO L93 Difference]: Finished difference Result 2504 states and 5137 transitions. [2022-07-22 17:48:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:48:44,903 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 67 [2022-07-22 17:48:44,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:44,915 INFO L225 Difference]: With dead ends: 2504 [2022-07-22 17:48:44,915 INFO L226 Difference]: Without dead ends: 1313 [2022-07-22 17:48:44,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:48:44,922 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 183 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:44,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1131 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:48:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-07-22 17:48:45,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1303. [2022-07-22 17:48:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 988 states have (on average 1.1751012145748987) internal successors, (1161), 946 states have internal predecessors, (1161), 128 states have call successors, (128), 66 states have call predecessors, (128), 186 states have return successors, (998), 290 states have call predecessors, (998), 126 states have call successors, (998) [2022-07-22 17:48:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 2287 transitions. [2022-07-22 17:48:45,019 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 2287 transitions. Word has length 67 [2022-07-22 17:48:45,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:45,019 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 2287 transitions. [2022-07-22 17:48:45,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-22 17:48:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 2287 transitions. [2022-07-22 17:48:45,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 17:48:45,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:45,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:45,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:48:45,026 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:45,026 INFO L85 PathProgramCache]: Analyzing trace with hash -279030099, now seen corresponding path program 1 times [2022-07-22 17:48:45,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:45,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234509630] [2022-07-22 17:48:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:45,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:45,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:48:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:48:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:48:45,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:45,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234509630] [2022-07-22 17:48:45,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234509630] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:48:45,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654311721] [2022-07-22 17:48:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:45,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:48:45,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:48:45,216 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) [2022-07-22 17:48:45,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:48:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:45,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 17:48:45,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:48:45,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 17:48:45,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 17:48:45,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 17:48:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:48:45,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:48:45,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654311721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:45,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:48:45,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2022-07-22 17:48:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811514387] [2022-07-22 17:48:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:45,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:48:45,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:48:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:48:45,667 INFO L87 Difference]: Start difference. First operand 1303 states and 2287 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:46,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:46,348 INFO L93 Difference]: Finished difference Result 2615 states and 5374 transitions. [2022-07-22 17:48:46,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:48:46,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-07-22 17:48:46,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:46,358 INFO L225 Difference]: With dead ends: 2615 [2022-07-22 17:48:46,359 INFO L226 Difference]: Without dead ends: 1326 [2022-07-22 17:48:46,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:48:46,366 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 164 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:46,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 728 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:48:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-07-22 17:48:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1299. [2022-07-22 17:48:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 984 states have (on average 1.1758130081300813) internal successors, (1157), 945 states have internal predecessors, (1157), 129 states have call successors, (129), 68 states have call predecessors, (129), 185 states have return successors, (973), 285 states have call predecessors, (973), 127 states have call successors, (973) [2022-07-22 17:48:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 2259 transitions. [2022-07-22 17:48:46,472 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 2259 transitions. Word has length 74 [2022-07-22 17:48:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:46,472 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 2259 transitions. [2022-07-22 17:48:46,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 2259 transitions. [2022-07-22 17:48:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 17:48:46,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:46,478 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:46,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:48:46,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:48:46,692 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash 680855499, now seen corresponding path program 1 times [2022-07-22 17:48:46,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:46,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028174183] [2022-07-22 17:48:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:46,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:46,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:48:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:48:46,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:46,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028174183] [2022-07-22 17:48:46,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028174183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:46,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:46,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:48:46,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034605714] [2022-07-22 17:48:46,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:46,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:48:46,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:46,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:48:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:48:46,833 INFO L87 Difference]: Start difference. First operand 1299 states and 2259 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:47,894 INFO L93 Difference]: Finished difference Result 2667 states and 5410 transitions. [2022-07-22 17:48:47,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:48:47,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-07-22 17:48:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:47,905 INFO L225 Difference]: With dead ends: 2667 [2022-07-22 17:48:47,905 INFO L226 Difference]: Without dead ends: 1386 [2022-07-22 17:48:47,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:48:47,913 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 219 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:47,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1087 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:48:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2022-07-22 17:48:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1337. [2022-07-22 17:48:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1010 states have (on average 1.1742574257425742) internal successors, (1186), 975 states have internal predecessors, (1186), 132 states have call successors, (132), 69 states have call predecessors, (132), 194 states have return successors, (980), 292 states have call predecessors, (980), 130 states have call successors, (980) [2022-07-22 17:48:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2298 transitions. [2022-07-22 17:48:48,024 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2298 transitions. Word has length 74 [2022-07-22 17:48:48,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:48,025 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 2298 transitions. [2022-07-22 17:48:48,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2298 transitions. [2022-07-22 17:48:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 17:48:48,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:48,031 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:48,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 17:48:48,032 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 238868692, now seen corresponding path program 1 times [2022-07-22 17:48:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:48,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924969755] [2022-07-22 17:48:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:48:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 17:48:48,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:48,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924969755] [2022-07-22 17:48:48,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924969755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:48,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:48,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:48:48,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598074122] [2022-07-22 17:48:48,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:48,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:48:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:48,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:48:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:48:48,199 INFO L87 Difference]: Start difference. First operand 1337 states and 2298 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:49,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:49,191 INFO L93 Difference]: Finished difference Result 2683 states and 5400 transitions. [2022-07-22 17:48:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:48:49,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2022-07-22 17:48:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:49,200 INFO L225 Difference]: With dead ends: 2683 [2022-07-22 17:48:49,200 INFO L226 Difference]: Without dead ends: 1364 [2022-07-22 17:48:49,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:48:49,207 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 134 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:49,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 854 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:48:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-07-22 17:48:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1344. [2022-07-22 17:48:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1016 states have (on average 1.1742125984251968) internal successors, (1193), 981 states have internal predecessors, (1193), 132 states have call successors, (132), 70 states have call predecessors, (132), 195 states have return successors, (980), 292 states have call predecessors, (980), 130 states have call successors, (980) [2022-07-22 17:48:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2305 transitions. [2022-07-22 17:48:49,285 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2305 transitions. Word has length 75 [2022-07-22 17:48:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:49,285 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 2305 transitions. [2022-07-22 17:48:49,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2305 transitions. [2022-07-22 17:48:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 17:48:49,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:49,290 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:49,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 17:48:49,290 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:49,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1789717418, now seen corresponding path program 1 times [2022-07-22 17:48:49,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:49,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137171276] [2022-07-22 17:48:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:49,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:49,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:49,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:49,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:49,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:48:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:48:49,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:49,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137171276] [2022-07-22 17:48:49,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137171276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:49,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:49,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:48:49,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827813453] [2022-07-22 17:48:49,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:49,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:48:49,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:48:49,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:48:49,450 INFO L87 Difference]: Start difference. First operand 1344 states and 2305 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:50,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:50,354 INFO L93 Difference]: Finished difference Result 2662 states and 5343 transitions. [2022-07-22 17:48:50,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:48:50,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2022-07-22 17:48:50,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:50,363 INFO L225 Difference]: With dead ends: 2662 [2022-07-22 17:48:50,364 INFO L226 Difference]: Without dead ends: 1336 [2022-07-22 17:48:50,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:48:50,372 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 179 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:50,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 897 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:48:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-07-22 17:48:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1317. [2022-07-22 17:48:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 999 states have (on average 1.1761761761761762) internal successors, (1175), 964 states have internal predecessors, (1175), 129 states have call successors, (129), 70 states have call predecessors, (129), 188 states have return successors, (955), 282 states have call predecessors, (955), 127 states have call successors, (955) [2022-07-22 17:48:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2259 transitions. [2022-07-22 17:48:50,452 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2259 transitions. Word has length 75 [2022-07-22 17:48:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:50,453 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 2259 transitions. [2022-07-22 17:48:50,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 17:48:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2259 transitions. [2022-07-22 17:48:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:48:50,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:50,457 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:50,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 17:48:50,458 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:50,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1290964072, now seen corresponding path program 1 times [2022-07-22 17:48:50,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:50,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115054489] [2022-07-22 17:48:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:50,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 17:48:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:48:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:48:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 17:48:50,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:50,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115054489] [2022-07-22 17:48:50,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115054489] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:48:50,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607818195] [2022-07-22 17:48:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:50,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:48:50,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:48:50,746 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) [2022-07-22 17:48:50,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:48:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:51,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 17:48:51,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:48:51,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-22 17:48:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:48:51,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:48:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:48:51,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607818195] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:48:51,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:48:51,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-22 17:48:51,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192710305] [2022-07-22 17:48:51,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:48:51,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 17:48:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 17:48:51,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:48:51,597 INFO L87 Difference]: Start difference. First operand 1317 states and 2259 transitions. Second operand has 16 states, 15 states have (on average 5.6) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:48:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:53,546 INFO L93 Difference]: Finished difference Result 3303 states and 7132 transitions. [2022-07-22 17:48:53,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 17:48:53,547 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-07-22 17:48:53,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:53,563 INFO L225 Difference]: With dead ends: 3303 [2022-07-22 17:48:53,564 INFO L226 Difference]: Without dead ends: 2004 [2022-07-22 17:48:53,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2022-07-22 17:48:53,572 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 418 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:53,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1583 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 17:48:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2022-07-22 17:48:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1940. [2022-07-22 17:48:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1485 states have (on average 1.1521885521885522) internal successors, (1711), 1396 states have internal predecessors, (1711), 164 states have call successors, (164), 94 states have call predecessors, (164), 290 states have return successors, (1915), 449 states have call predecessors, (1915), 162 states have call successors, (1915) [2022-07-22 17:48:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 3790 transitions. [2022-07-22 17:48:53,739 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 3790 transitions. Word has length 91 [2022-07-22 17:48:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:53,740 INFO L495 AbstractCegarLoop]: Abstraction has 1940 states and 3790 transitions. [2022-07-22 17:48:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:48:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 3790 transitions. [2022-07-22 17:48:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 17:48:53,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:53,745 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:53,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:48:53,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-22 17:48:53,962 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -529991506, now seen corresponding path program 1 times [2022-07-22 17:48:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:53,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124520490] [2022-07-22 17:48:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:53,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:48:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:48:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:54,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:48:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:48:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:48:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:54,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124520490] [2022-07-22 17:48:54,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124520490] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:48:54,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91196955] [2022-07-22 17:48:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:54,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:48:54,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:48:54,168 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) [2022-07-22 17:48:54,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:48:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:54,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 17:48:54,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:48:54,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 17:48:54,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 17:48:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 17:48:54,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:48:54,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-22 17:48:54,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-22 17:48:54,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-22 17:48:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 17:48:55,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91196955] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:48:55,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:48:55,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2022-07-22 17:48:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749001948] [2022-07-22 17:48:55,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:48:55,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 17:48:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 17:48:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:48:55,013 INFO L87 Difference]: Start difference. First operand 1940 states and 3790 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:48:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:56,895 INFO L93 Difference]: Finished difference Result 5014 states and 12840 transitions. [2022-07-22 17:48:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 17:48:56,897 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2022-07-22 17:48:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:56,925 INFO L225 Difference]: With dead ends: 5014 [2022-07-22 17:48:56,925 INFO L226 Difference]: Without dead ends: 3092 [2022-07-22 17:48:56,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=923, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 17:48:56,937 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 514 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:56,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1438 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 17:48:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-07-22 17:48:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 2967. [2022-07-22 17:48:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2274 states have (on average 1.1125769569041337) internal successors, (2530), 2217 states have internal predecessors, (2530), 187 states have call successors, (187), 112 states have call predecessors, (187), 505 states have return successors, (4302), 637 states have call predecessors, (4302), 185 states have call successors, (4302) [2022-07-22 17:48:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 7019 transitions. [2022-07-22 17:48:57,250 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 7019 transitions. Word has length 75 [2022-07-22 17:48:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:57,250 INFO L495 AbstractCegarLoop]: Abstraction has 2967 states and 7019 transitions. [2022-07-22 17:48:57,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:48:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 7019 transitions. [2022-07-22 17:48:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 17:48:57,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:57,258 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:57,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:48:57,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 17:48:57,472 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash -224628074, now seen corresponding path program 1 times [2022-07-22 17:48:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:57,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131816834] [2022-07-22 17:48:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:57,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:48:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:48:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:48:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:48:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:48:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:48:57,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131816834] [2022-07-22 17:48:57,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131816834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:48:57,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:48:57,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:48:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386935359] [2022-07-22 17:48:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:48:57,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:48:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:48:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:48:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:48:57,819 INFO L87 Difference]: Start difference. First operand 2967 states and 7019 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:48:58,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:48:58,886 INFO L93 Difference]: Finished difference Result 5933 states and 17931 transitions. [2022-07-22 17:48:58,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:48:58,887 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 108 [2022-07-22 17:48:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:48:58,918 INFO L225 Difference]: With dead ends: 5933 [2022-07-22 17:48:58,918 INFO L226 Difference]: Without dead ends: 2975 [2022-07-22 17:48:58,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:48:58,941 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 169 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:48:58,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 684 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:48:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2022-07-22 17:48:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2958. [2022-07-22 17:48:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2267 states have (on average 1.1124834583149537) internal successors, (2522), 2209 states have internal predecessors, (2522), 187 states have call successors, (187), 112 states have call predecessors, (187), 503 states have return successors, (4299), 636 states have call predecessors, (4299), 185 states have call successors, (4299) [2022-07-22 17:48:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 7008 transitions. [2022-07-22 17:48:59,217 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 7008 transitions. Word has length 108 [2022-07-22 17:48:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:48:59,217 INFO L495 AbstractCegarLoop]: Abstraction has 2958 states and 7008 transitions. [2022-07-22 17:48:59,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:48:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 7008 transitions. [2022-07-22 17:48:59,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:48:59,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:48:59,225 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:48:59,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 17:48:59,226 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:48:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:48:59,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1144240673, now seen corresponding path program 1 times [2022-07-22 17:48:59,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:48:59,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081692347] [2022-07-22 17:48:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:59,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:48:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:48:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:48:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:48:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:48:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:48:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:48:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:48:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:48:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:48:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 17:48:59,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:48:59,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081692347] [2022-07-22 17:48:59,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081692347] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:48:59,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147336296] [2022-07-22 17:48:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:48:59,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:48:59,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:48:59,560 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) [2022-07-22 17:48:59,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:49:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:00,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 17:49:00,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:49:00,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-22 17:49:01,054 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (v_ArrVal_6893 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6| Int)) (and (= (store |c_old(#memory_int)| c_~user~0.base (store (select |c_old(#memory_int)| c_~user~0.base) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|) v_ArrVal_6893)) |c_#memory_int|) (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|))) is different from true [2022-07-22 17:49:01,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:01,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-22 17:49:01,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-22 17:49:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 1 not checked. [2022-07-22 17:49:01,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:49:01,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-22 17:49:01,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:01,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-22 17:49:01,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:01,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-22 17:49:01,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:02,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-22 17:49:02,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:02,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-22 17:49:02,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:02,578 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6962 Int) (|v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86| Int)) (or (not (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86|)) (not (<= (+ c_~user~0.offset 16) |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66|)) (not (= (select (store (select |c_#memory_int| c_~user~0.base) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66|) v_ArrVal_6962) c_~user~0.offset) ~sys_state_s~0~AS_IDLE)))) is different from false [2022-07-22 17:49:02,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147336296] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:49:02,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 17:49:02,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2022-07-22 17:49:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946923990] [2022-07-22 17:49:02,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 17:49:02,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 17:49:02,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:49:02,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 17:49:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=334, Unknown=2, NotChecked=74, Total=462 [2022-07-22 17:49:02,581 INFO L87 Difference]: Start difference. First operand 2958 states and 7008 transitions. Second operand has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 18 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-22 17:49:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:49:13,071 INFO L93 Difference]: Finished difference Result 9054 states and 29624 transitions. [2022-07-22 17:49:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 17:49:13,071 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 18 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 111 [2022-07-22 17:49:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:49:13,186 INFO L225 Difference]: With dead ends: 9054 [2022-07-22 17:49:13,186 INFO L226 Difference]: Without dead ends: 6114 [2022-07-22 17:49:13,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=211, Invalid=1263, Unknown=16, NotChecked=150, Total=1640 [2022-07-22 17:49:13,212 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 390 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:49:13,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 2113 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2104 Invalid, 0 Unknown, 290 Unchecked, 1.8s Time] [2022-07-22 17:49:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2022-07-22 17:49:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 5637. [2022-07-22 17:49:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5637 states, 4357 states have (on average 1.0858388799632774) internal successors, (4731), 4274 states have internal predecessors, (4731), 270 states have call successors, (270), 167 states have call predecessors, (270), 1009 states have return successors, (10847), 1195 states have call predecessors, (10847), 268 states have call successors, (10847) [2022-07-22 17:49:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 15848 transitions. [2022-07-22 17:49:13,809 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 15848 transitions. Word has length 111 [2022-07-22 17:49:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:49:13,810 INFO L495 AbstractCegarLoop]: Abstraction has 5637 states and 15848 transitions. [2022-07-22 17:49:13,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 18 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-22 17:49:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 15848 transitions. [2022-07-22 17:49:13,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:49:13,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:49:13,819 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:49:13,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:49:14,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 17:49:14,046 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:49:14,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:49:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1732025616, now seen corresponding path program 1 times [2022-07-22 17:49:14,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:49:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313057132] [2022-07-22 17:49:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:49:14,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:49:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:49:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:49:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:49:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:49:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:49:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:49:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:49:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:49:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:49:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:49:14,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:49:14,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313057132] [2022-07-22 17:49:14,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313057132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:49:14,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:49:14,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 17:49:14,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467527161] [2022-07-22 17:49:14,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:49:14,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 17:49:14,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:49:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 17:49:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:49:14,458 INFO L87 Difference]: Start difference. First operand 5637 states and 15848 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:49:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:49:15,818 INFO L93 Difference]: Finished difference Result 11332 states and 41572 transitions. [2022-07-22 17:49:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:49:15,818 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 109 [2022-07-22 17:49:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:49:15,902 INFO L225 Difference]: With dead ends: 11332 [2022-07-22 17:49:15,902 INFO L226 Difference]: Without dead ends: 5704 [2022-07-22 17:49:15,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-22 17:49:15,962 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 105 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:49:15,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 949 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:49:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2022-07-22 17:49:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5532. [2022-07-22 17:49:16,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 4279 states have (on average 1.0871698995092312) internal successors, (4652), 4194 states have internal predecessors, (4652), 267 states have call successors, (267), 166 states have call predecessors, (267), 985 states have return successors, (10800), 1171 states have call predecessors, (10800), 265 states have call successors, (10800) [2022-07-22 17:49:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 15719 transitions. [2022-07-22 17:49:16,669 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 15719 transitions. Word has length 109 [2022-07-22 17:49:16,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:49:16,671 INFO L495 AbstractCegarLoop]: Abstraction has 5532 states and 15719 transitions. [2022-07-22 17:49:16,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:49:16,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 15719 transitions. [2022-07-22 17:49:16,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 17:49:16,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:49:16,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:49:16,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 17:49:16,684 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:49:16,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:49:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1143412623, now seen corresponding path program 1 times [2022-07-22 17:49:16,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:49:16,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724217998] [2022-07-22 17:49:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:49:16,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:49:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:49:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:49:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:49:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:49:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:49:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:49:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:49:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:49:16,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724217998] [2022-07-22 17:49:16,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724217998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:49:16,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573909724] [2022-07-22 17:49:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:49:16,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:49:16,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:49:16,976 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) [2022-07-22 17:49:16,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 17:49:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:17,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-22 17:49:17,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:49:17,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-22 17:49:18,782 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8144 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_89| Int) (|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_88| Int)) (and (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (= (store |c_old(#memory_int)| c_~user~0.base (store (store (select |c_old(#memory_int)| c_~user~0.base) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_88|) 0) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_89|) v_ArrVal_8144)) |c_#memory_int|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_88|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_88| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_89|))) is different from true [2022-07-22 17:49:18,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:18,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:18,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:18,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2022-07-22 17:49:19,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:19,023 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 17:49:19,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2022-07-22 17:49:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 2 not checked. [2022-07-22 17:49:19,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:49:19,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-07-22 17:49:19,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:19,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:19,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-07-22 17:49:19,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:19,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 17:49:22,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573909724] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:49:22,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:49:22,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 24 [2022-07-22 17:49:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066629331] [2022-07-22 17:49:22,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:49:22,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 17:49:22,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:49:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 17:49:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=440, Unknown=1, NotChecked=42, Total=552 [2022-07-22 17:49:22,148 INFO L87 Difference]: Start difference. First operand 5532 states and 15719 transitions. Second operand has 24 states, 23 states have (on average 5.0) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:49:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:49:28,322 INFO L93 Difference]: Finished difference Result 11177 states and 41889 transitions. [2022-07-22 17:49:28,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 17:49:28,323 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.0) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 84 [2022-07-22 17:49:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:49:28,404 INFO L225 Difference]: With dead ends: 11177 [2022-07-22 17:49:28,405 INFO L226 Difference]: Without dead ends: 5663 [2022-07-22 17:49:28,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=193, Invalid=998, Unknown=3, NotChecked=66, Total=1260 [2022-07-22 17:49:28,533 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 455 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 758 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:49:28,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1997 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 978 Invalid, 0 Unknown, 758 Unchecked, 1.3s Time] [2022-07-22 17:49:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2022-07-22 17:49:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 5518. [2022-07-22 17:49:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5518 states, 4266 states have (on average 1.0855602437880918) internal successors, (4631), 4167 states have internal predecessors, (4631), 265 states have call successors, (265), 164 states have call predecessors, (265), 986 states have return successors, (10913), 1186 states have call predecessors, (10913), 263 states have call successors, (10913) [2022-07-22 17:49:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 15809 transitions. [2022-07-22 17:49:29,152 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 15809 transitions. Word has length 84 [2022-07-22 17:49:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:49:29,152 INFO L495 AbstractCegarLoop]: Abstraction has 5518 states and 15809 transitions. [2022-07-22 17:49:29,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.0) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:49:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 15809 transitions. [2022-07-22 17:49:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 17:49:29,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:49:29,157 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:49:29,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 17:49:29,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:49:29,371 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:49:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:49:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1454230807, now seen corresponding path program 1 times [2022-07-22 17:49:29,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:49:29,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730991917] [2022-07-22 17:49:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:49:29,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:49:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:49:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:49:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:49:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:49:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:49:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:29,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:49:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:29,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:49:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 17:49:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:49:29,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730991917] [2022-07-22 17:49:29,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730991917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:49:29,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717063892] [2022-07-22 17:49:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:49:29,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:49:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:49:29,688 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) [2022-07-22 17:49:29,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 17:49:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:30,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 17:49:30,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:49:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 17:49:30,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:49:30,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717063892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:49:30,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:49:30,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 19 [2022-07-22 17:49:30,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481693781] [2022-07-22 17:49:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:49:30,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:49:30,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:49:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:49:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:49:30,522 INFO L87 Difference]: Start difference. First operand 5518 states and 15809 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 17:49:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:49:30,892 INFO L93 Difference]: Finished difference Result 11159 states and 41945 transitions. [2022-07-22 17:49:30,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:49:30,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2022-07-22 17:49:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:49:31,027 INFO L225 Difference]: With dead ends: 11159 [2022-07-22 17:49:31,028 INFO L226 Difference]: Without dead ends: 5659 [2022-07-22 17:49:31,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-07-22 17:49:31,077 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 5 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:49:31,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1538 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:49:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2022-07-22 17:49:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 5555. [2022-07-22 17:49:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5555 states, 4294 states have (on average 1.085002328830927) internal successors, (4659), 4196 states have internal predecessors, (4659), 265 states have call successors, (265), 164 states have call predecessors, (265), 995 states have return successors, (11083), 1194 states have call predecessors, (11083), 263 states have call successors, (11083) [2022-07-22 17:49:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 16007 transitions. [2022-07-22 17:49:31,587 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 16007 transitions. Word has length 106 [2022-07-22 17:49:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:49:31,588 INFO L495 AbstractCegarLoop]: Abstraction has 5555 states and 16007 transitions. [2022-07-22 17:49:31,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 17:49:31,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 16007 transitions. [2022-07-22 17:49:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-22 17:49:31,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:49:31,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:49:31,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 17:49:31,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-22 17:49:31,820 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:49:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:49:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1426745457, now seen corresponding path program 2 times [2022-07-22 17:49:31,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:49:31,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489934076] [2022-07-22 17:49:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:49:31,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:49:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:49:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:49:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:31,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:49:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:31,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:49:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:49:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:49:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:49:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:49:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:49:32,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489934076] [2022-07-22 17:49:32,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489934076] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:49:32,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568837432] [2022-07-22 17:49:32,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 17:49:32,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:49:32,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:49:32,151 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) [2022-07-22 17:49:32,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 17:49:34,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 17:49:34,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 17:49:34,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-22 17:49:34,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:49:34,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-22 17:49:39,213 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_140| Int) (v_ArrVal_9792 Int) (v_ArrVal_9790 Int) (v_ArrVal_9788 Int) (|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_137| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_139| Int)) (and (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_137|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_139|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_139| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_140|) (= (store |c_old(#memory_int)| c_~user~0.base (store (store (store (store (select |c_old(#memory_int)| c_~user~0.base) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_137|) 0) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138|) v_ArrVal_9788) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_139|) v_ArrVal_9790) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_140|) v_ArrVal_9792)) |c_#memory_int|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_137| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138|))) is different from true [2022-07-22 17:49:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 48 [2022-07-22 17:49:39,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:49:39,530 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 17:49:39,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2022-07-22 17:49:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 7 refuted. 3 times theorem prover too weak. 8 trivial. 4 not checked. [2022-07-22 17:49:39,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:49:40,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-07-22 17:49:40,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:40,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:40,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:40,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:40,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-07-22 17:49:40,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:40,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:40,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:40,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 17:49:41,734 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9860 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_220| Int) (v_ArrVal_9859 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_221| Int) (v_ArrVal_9861 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_218| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_219| Int) (|v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103| Int)) (or (not (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_219| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_218|)) (not (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_218| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_221|)) (not (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_219|)) (not (<= (+ c_~user~0.offset 16) |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|)) (not (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_221| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_220|)) (not (= ~sys_state_s~0~AS_IDLE (select (store (store (store (store (select |c_#memory_int| c_~user~0.base) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_219| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|) 0) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_218| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|) v_ArrVal_9859) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_221| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|) v_ArrVal_9861) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_220| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|) v_ArrVal_9860) c_~user~0.offset))))) is different from false [2022-07-22 17:49:41,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568837432] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:49:41,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 17:49:41,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2022-07-22 17:49:41,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514477576] [2022-07-22 17:49:41,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 17:49:41,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 17:49:41,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:49:41,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 17:49:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=451, Unknown=5, NotChecked=86, Total=600 [2022-07-22 17:49:41,738 INFO L87 Difference]: Start difference. First operand 5555 states and 16007 transitions. Second operand has 24 states, 23 states have (on average 4.173913043478261) internal successors, (96), 21 states have internal predecessors, (96), 5 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:50:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:50:08,343 INFO L93 Difference]: Finished difference Result 10397 states and 38535 transitions. [2022-07-22 17:50:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 17:50:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.173913043478261) internal successors, (96), 21 states have internal predecessors, (96), 5 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 86 [2022-07-22 17:50:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:50:08,404 INFO L225 Difference]: With dead ends: 10397 [2022-07-22 17:50:08,405 INFO L226 Difference]: Without dead ends: 4860 [2022-07-22 17:50:08,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=164, Invalid=1159, Unknown=17, NotChecked=142, Total=1482 [2022-07-22 17:50:08,458 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 361 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 875 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:50:08,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 2205 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1025 Invalid, 0 Unknown, 875 Unchecked, 1.4s Time] [2022-07-22 17:50:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2022-07-22 17:50:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4751. [2022-07-22 17:50:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4751 states, 3665 states have (on average 1.0908594815825374) internal successors, (3998), 3582 states have internal predecessors, (3998), 242 states have call successors, (242), 149 states have call predecessors, (242), 843 states have return successors, (9047), 1019 states have call predecessors, (9047), 240 states have call successors, (9047) [2022-07-22 17:50:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4751 states to 4751 states and 13287 transitions. [2022-07-22 17:50:08,912 INFO L78 Accepts]: Start accepts. Automaton has 4751 states and 13287 transitions. Word has length 86 [2022-07-22 17:50:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:50:08,912 INFO L495 AbstractCegarLoop]: Abstraction has 4751 states and 13287 transitions. [2022-07-22 17:50:08,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.173913043478261) internal successors, (96), 21 states have internal predecessors, (96), 5 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 17:50:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4751 states and 13287 transitions. [2022-07-22 17:50:08,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 17:50:08,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:50:08,916 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:50:08,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 17:50:09,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:50:09,143 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:50:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:50:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash -174001039, now seen corresponding path program 3 times [2022-07-22 17:50:09,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:50:09,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065930610] [2022-07-22 17:50:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:50:09,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:50:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:50:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:50:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:50:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:50:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:09,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:50:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:50:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:50:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:50:09,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065930610] [2022-07-22 17:50:09,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065930610] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:50:09,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060639098] [2022-07-22 17:50:09,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 17:50:09,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:50:09,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:50:09,503 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) [2022-07-22 17:50:09,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 17:50:10,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 17:50:10,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 17:50:10,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 17:50:10,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:50:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:50:10,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:50:10,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060639098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:50:10,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:50:10,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 20 [2022-07-22 17:50:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048615992] [2022-07-22 17:50:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:50:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:50:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:50:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:50:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-07-22 17:50:10,743 INFO L87 Difference]: Start difference. First operand 4751 states and 13287 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 17:50:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:50:11,066 INFO L93 Difference]: Finished difference Result 9577 states and 34822 transitions. [2022-07-22 17:50:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:50:11,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 87 [2022-07-22 17:50:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:50:11,191 INFO L225 Difference]: With dead ends: 9577 [2022-07-22 17:50:11,191 INFO L226 Difference]: Without dead ends: 4844 [2022-07-22 17:50:11,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:50:11,218 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 5 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:50:11,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1538 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:50:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2022-07-22 17:50:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4749. [2022-07-22 17:50:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 3664 states have (on average 1.0908842794759825) internal successors, (3997), 3580 states have internal predecessors, (3997), 242 states have call successors, (242), 149 states have call predecessors, (242), 842 states have return successors, (9044), 1019 states have call predecessors, (9044), 240 states have call successors, (9044) [2022-07-22 17:50:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 13283 transitions. [2022-07-22 17:50:11,541 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 13283 transitions. Word has length 87 [2022-07-22 17:50:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:50:11,541 INFO L495 AbstractCegarLoop]: Abstraction has 4749 states and 13283 transitions. [2022-07-22 17:50:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 17:50:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 13283 transitions. [2022-07-22 17:50:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-22 17:50:11,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:50:11,548 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:50:11,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 17:50:11,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-22 17:50:11,776 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:50:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:50:11,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1912288179, now seen corresponding path program 1 times [2022-07-22 17:50:11,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:50:11,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122942478] [2022-07-22 17:50:11,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:50:11,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:50:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:50:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:11,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:50:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:50:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:11,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:50:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:11,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:50:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:50:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:11,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:50:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 17:50:11,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:50:11,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122942478] [2022-07-22 17:50:11,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122942478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:50:11,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:50:11,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:50:11,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726135959] [2022-07-22 17:50:11,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:50:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:50:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:50:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:50:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:50:11,964 INFO L87 Difference]: Start difference. First operand 4749 states and 13283 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:50:12,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:50:12,754 INFO L93 Difference]: Finished difference Result 9529 states and 34738 transitions. [2022-07-22 17:50:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:50:12,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2022-07-22 17:50:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:50:12,798 INFO L225 Difference]: With dead ends: 9529 [2022-07-22 17:50:12,798 INFO L226 Difference]: Without dead ends: 4746 [2022-07-22 17:50:12,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:50:12,830 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 145 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:50:12,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 529 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:50:12,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2022-07-22 17:50:13,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4617. [2022-07-22 17:50:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4617 states, 3574 states have (on average 1.0744264129826524) internal successors, (3840), 3485 states have internal predecessors, (3840), 213 states have call successors, (213), 119 states have call predecessors, (213), 829 states have return successors, (8996), 1012 states have call predecessors, (8996), 211 states have call successors, (8996) [2022-07-22 17:50:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 13049 transitions. [2022-07-22 17:50:13,160 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 13049 transitions. Word has length 88 [2022-07-22 17:50:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:50:13,160 INFO L495 AbstractCegarLoop]: Abstraction has 4617 states and 13049 transitions. [2022-07-22 17:50:13,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:50:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 13049 transitions. [2022-07-22 17:50:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:50:13,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:50:13,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:50:13,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 17:50:13,168 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:50:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:50:13,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1061052459, now seen corresponding path program 1 times [2022-07-22 17:50:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:50:13,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768132607] [2022-07-22 17:50:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:50:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:50:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:50:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:50:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:13,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:50:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:50:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:13,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:50:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:50:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:50:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:50:13,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:50:13,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768132607] [2022-07-22 17:50:13,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768132607] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:50:13,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691115785] [2022-07-22 17:50:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:50:13,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:50:13,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:50:13,632 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) [2022-07-22 17:50:13,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 17:50:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:14,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 97 conjunts are in the unsatisfiable core [2022-07-22 17:50:14,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:50:14,504 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-22 17:50:14,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-22 17:50:14,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:50:14,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 46 [2022-07-22 17:50:14,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 17:50:14,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 58 [2022-07-22 17:50:14,644 INFO L356 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size [2022-07-22 17:50:14,646 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-22 17:50:14,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 17:50:14,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-22 17:50:14,859 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_1 input size 80 context size 80 output size 80 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:298) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:284) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-22 17:50:14,861 INFO L158 Benchmark]: Toolchain (without parser) took 128541.17ms. Allocated memory was 92.3MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 59.4MB in the beginning and 828.1MB in the end (delta: -768.7MB). Peak memory consumption was 289.7MB. Max. memory is 16.1GB. [2022-07-22 17:50:14,861 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 17:50:14,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 624.07ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 59.1MB in the beginning and 85.7MB in the end (delta: -26.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 17:50:14,861 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.49ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 82.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 17:50:14,862 INFO L158 Benchmark]: Boogie Preprocessor took 67.42ms. Allocated memory is still 125.8MB. Free memory was 82.8MB in the beginning and 79.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 17:50:14,862 INFO L158 Benchmark]: RCFGBuilder took 870.18ms. Allocated memory is still 125.8MB. Free memory was 79.9MB in the beginning and 41.7MB in the end (delta: 38.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-07-22 17:50:14,862 INFO L158 Benchmark]: TraceAbstraction took 126886.91ms. Allocated memory was 125.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 40.9MB in the beginning and 828.1MB in the end (delta: -787.2MB). Peak memory consumption was 239.5MB. Max. memory is 16.1GB. [2022-07-22 17:50:14,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 624.07ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 59.1MB in the beginning and 85.7MB in the end (delta: -26.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.49ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 82.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.42ms. Allocated memory is still 125.8MB. Free memory was 82.8MB in the beginning and 79.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 870.18ms. Allocated memory is still 125.8MB. Free memory was 79.9MB in the beginning and 41.7MB in the end (delta: 38.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 126886.91ms. Allocated memory was 125.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 40.9MB in the beginning and 828.1MB in the end (delta: -787.2MB). Peak memory consumption was 239.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_1 input size 80 context size 80 output size 80 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_1 input size 80 context size 80 output size 80: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-22 17:50:14,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:50:16,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:50:16,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:50:16,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:50:16,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:50:16,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:50:16,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:50:16,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:50:16,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:50:16,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:50:16,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:50:16,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:50:16,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:50:16,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:50:16,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:50:16,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:50:16,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:50:16,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:50:16,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:50:16,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:50:16,838 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:50:16,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:50:16,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:50:16,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:50:16,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:50:16,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:50:16,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:50:16,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:50:16,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:50:16,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:50:16,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:50:16,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:50:16,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:50:16,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:50:16,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:50:16,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:50:16,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:50:16,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:50:16,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:50:16,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:50:16,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:50:16,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:50:16,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 17:50:16,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:50:16,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:50:16,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:50:16,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:50:16,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:50:16,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:50:16,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:50:16,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:50:16,886 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:50:16,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:50:16,887 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:50:16,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:50:16,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:50:16,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:50:16,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:50:16,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:50:16,888 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 17:50:16,889 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 17:50:16,889 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 17:50:16,890 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:50:16,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:50:16,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:50:16,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:50:16,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:50:16,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:50:16,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:50:16,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:50:16,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:50:16,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:50:16,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:50:16,893 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 17:50:16,894 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 17:50:16,894 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:50:16,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:50:16,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:50:16,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 17:50:16,895 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2022-07-22 17:50:17,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:50:17,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:50:17,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:50:17,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:50:17,259 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:50:17,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-22 17:50:17,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33540555a/d40a6bc5159d4167b41fbd3ed0e4acc9/FLAGfac54b821 [2022-07-22 17:50:17,852 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:50:17,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-22 17:50:17,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33540555a/d40a6bc5159d4167b41fbd3ed0e4acc9/FLAGfac54b821 [2022-07-22 17:50:18,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33540555a/d40a6bc5159d4167b41fbd3ed0e4acc9 [2022-07-22 17:50:18,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:50:18,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:50:18,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:50:18,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:50:18,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:50:18,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:18,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6eecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18, skipping insertion in model container [2022-07-22 17:50:18,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:18,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:50:18,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:50:18,781 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-07-22 17:50:18,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:50:18,803 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:50:18,850 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-07-22 17:50:18,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:50:18,905 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:50:18,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18 WrapperNode [2022-07-22 17:50:18,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:50:18,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:50:18,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:50:18,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:50:18,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:18,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:18,979 INFO L137 Inliner]: procedures = 188, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 207 [2022-07-22 17:50:18,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:50:18,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:50:18,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:50:18,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:50:18,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:18,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:19,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:19,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:19,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:19,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:19,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:19,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:50:19,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:50:19,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:50:19,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:50:19,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (1/1) ... [2022-07-22 17:50:19,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:50:19,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:50:19,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 17:50:19,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 17:50:19,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-22 17:50:19,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-22 17:50:19,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-22 17:50:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-22 17:50:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-07-22 17:50:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-07-22 17:50:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 17:50:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-07-22 17:50:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-07-22 17:50:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:50:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 17:50:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 17:50:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-07-22 17:50:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-07-22 17:50:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-07-22 17:50:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-07-22 17:50:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-07-22 17:50:19,159 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-07-22 17:50:19,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 17:50:19,159 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-07-22 17:50:19,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-07-22 17:50:19,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 17:50:19,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-22 17:50:19,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 17:50:19,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-22 17:50:19,160 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-07-22 17:50:19,160 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-07-22 17:50:19,160 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-07-22 17:50:19,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-07-22 17:50:19,160 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-22 17:50:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:50:19,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:50:19,373 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:50:19,376 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:50:22,685 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:50:22,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:50:22,692 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 17:50:22,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:50:22 BoogieIcfgContainer [2022-07-22 17:50:22,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:50:22,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:50:22,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:50:22,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:50:22,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:50:18" (1/3) ... [2022-07-22 17:50:22,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dcf8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:50:22, skipping insertion in model container [2022-07-22 17:50:22,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:50:18" (2/3) ... [2022-07-22 17:50:22,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dcf8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:50:22, skipping insertion in model container [2022-07-22 17:50:22,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:50:22" (3/3) ... [2022-07-22 17:50:22,701 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-07-22 17:50:22,718 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:50:22,718 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:50:22,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:50:22,773 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@672ae118, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2010dd9 [2022-07-22 17:50:22,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:50:22,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-22 17:50:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 17:50:22,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:50:22,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:50:22,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:50:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:50:22,802 INFO L85 PathProgramCache]: Analyzing trace with hash -965536278, now seen corresponding path program 1 times [2022-07-22 17:50:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 17:50:22,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10921938] [2022-07-22 17:50:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:50:22,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 17:50:22,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 17:50:22,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 17:50:22,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 17:50:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:23,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 17:50:23,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:50:23,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 17:50:23,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 17:50:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:50:23,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:50:23,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 17:50:23,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10921938] [2022-07-22 17:50:23,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10921938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:50:23,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:50:23,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:50:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630566517] [2022-07-22 17:50:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:50:23,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:50:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 17:50:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:50:23,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:50:23,323 INFO L87 Difference]: Start difference. First operand has 132 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:50:24,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:50:27,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:50:28,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:50:33,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:50:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:50:39,947 INFO L93 Difference]: Finished difference Result 285 states and 409 transitions. [2022-07-22 17:50:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:50:39,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-07-22 17:50:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:50:39,977 INFO L225 Difference]: With dead ends: 285 [2022-07-22 17:50:39,977 INFO L226 Difference]: Without dead ends: 134 [2022-07-22 17:50:39,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:50:39,994 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 36 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:50:39,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1035 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2022-07-22 17:50:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-22 17:50:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-07-22 17:50:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 96 states have internal predecessors, (123), 30 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-22 17:50:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2022-07-22 17:50:40,069 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 19 [2022-07-22 17:50:40,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:50:40,072 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2022-07-22 17:50:40,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:50:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2022-07-22 17:50:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 17:50:40,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:50:40,083 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:50:40,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:50:40,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 17:50:40,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:50:40,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:50:40,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1463372220, now seen corresponding path program 1 times [2022-07-22 17:50:40,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 17:50:40,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211308707] [2022-07-22 17:50:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:50:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 17:50:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 17:50:40,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 17:50:40,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 17:50:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:40,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:50:40,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:50:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:50:40,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:50:40,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 17:50:40,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211308707] [2022-07-22 17:50:40,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211308707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:50:40,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:50:40,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:50:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317747746] [2022-07-22 17:50:40,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:50:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:50:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 17:50:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:50:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:50:40,499 INFO L87 Difference]: Start difference. First operand 133 states and 179 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:50:40,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:50:40,622 INFO L93 Difference]: Finished difference Result 253 states and 363 transitions. [2022-07-22 17:50:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:50:40,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-07-22 17:50:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:50:40,625 INFO L225 Difference]: With dead ends: 253 [2022-07-22 17:50:40,625 INFO L226 Difference]: Without dead ends: 133 [2022-07-22 17:50:40,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:50:40,627 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 6 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:50:40,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 459 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:50:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-22 17:50:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-22 17:50:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 96 states have internal predecessors, (122), 30 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-22 17:50:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 178 transitions. [2022-07-22 17:50:40,645 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 178 transitions. Word has length 35 [2022-07-22 17:50:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:50:40,645 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 178 transitions. [2022-07-22 17:50:40,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:50:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 178 transitions. [2022-07-22 17:50:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 17:50:40,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:50:40,647 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:50:40,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:50:40,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 17:50:40,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:50:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:50:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1541012852, now seen corresponding path program 1 times [2022-07-22 17:50:40,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 17:50:40,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704177308] [2022-07-22 17:50:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:50:40,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 17:50:40,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 17:50:40,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 17:50:40,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 17:50:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:41,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 17:50:41,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:50:41,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 17:50:41,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 17:50:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:50:41,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:50:41,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 17:50:41,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704177308] [2022-07-22 17:50:41,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704177308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:50:41,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:50:41,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:50:41,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230789706] [2022-07-22 17:50:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:50:41,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:50:41,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 17:50:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:50:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:50:41,196 INFO L87 Difference]: Start difference. First operand 133 states and 178 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:50:43,719 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:50:45,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:50:47,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:50:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:50:56,565 INFO L93 Difference]: Finished difference Result 284 states and 408 transitions. [2022-07-22 17:50:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:50:56,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-07-22 17:50:56,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:50:56,568 INFO L225 Difference]: With dead ends: 284 [2022-07-22 17:50:56,568 INFO L226 Difference]: Without dead ends: 166 [2022-07-22 17:50:56,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:50:56,570 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 38 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:50:56,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1070 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-07-22 17:50:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-22 17:50:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2022-07-22 17:50:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 32 states have call successors, (32), 12 states have call predecessors, (32), 11 states have return successors, (30), 27 states have call predecessors, (30), 28 states have call successors, (30) [2022-07-22 17:50:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 210 transitions. [2022-07-22 17:50:56,591 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 210 transitions. Word has length 36 [2022-07-22 17:50:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:50:56,591 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 210 transitions. [2022-07-22 17:50:56,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:50:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 210 transitions. [2022-07-22 17:50:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 17:50:56,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:50:56,593 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:50:56,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:50:56,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 17:50:56,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:50:56,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:50:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1282847414, now seen corresponding path program 1 times [2022-07-22 17:50:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 17:50:56,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842100055] [2022-07-22 17:50:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:50:56,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 17:50:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 17:50:56,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 17:50:56,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-22 17:50:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:50:57,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 17:50:57,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:50:57,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 17:50:57,342 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-22 17:50:57,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-22 17:50:57,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 17:50:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:50:57,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:50:59,528 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| (_ BitVec 32))) (not (= (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset) ~sys_state_s~0~AS_IDLE))) is different from false [2022-07-22 17:51:01,549 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| (_ BitVec 32))) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) (_ bv0 32) ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2022-07-22 17:51:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:51:03,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 17:51:03,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842100055] [2022-07-22 17:51:03,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842100055] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 17:51:03,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:51:03,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-07-22 17:51:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459273870] [2022-07-22 17:51:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:51:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:51:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 17:51:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:51:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2022-07-22 17:51:03,849 INFO L87 Difference]: Start difference. First operand 155 states and 210 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:51:14,154 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 17:51:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:51:22,167 INFO L93 Difference]: Finished difference Result 373 states and 542 transitions. [2022-07-22 17:51:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:51:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-07-22 17:51:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:51:22,171 INFO L225 Difference]: With dead ends: 373 [2022-07-22 17:51:22,171 INFO L226 Difference]: Without dead ends: 233 [2022-07-22 17:51:22,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=62, Invalid=216, Unknown=2, NotChecked=62, Total=342 [2022-07-22 17:51:22,173 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 84 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 270 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:51:22,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1036 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 150 Invalid, 0 Unknown, 270 Unchecked, 8.1s Time] [2022-07-22 17:51:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-22 17:51:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 224. [2022-07-22 17:51:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 161 states have (on average 1.329192546583851) internal successors, (214), 169 states have internal predecessors, (214), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (61), 35 states have call predecessors, (61), 38 states have call successors, (61) [2022-07-22 17:51:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 317 transitions. [2022-07-22 17:51:22,195 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 317 transitions. Word has length 36 [2022-07-22 17:51:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:51:22,195 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 317 transitions. [2022-07-22 17:51:22,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:51:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 317 transitions. [2022-07-22 17:51:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 17:51:22,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:51:22,198 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:51:22,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:51:22,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 17:51:22,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:51:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:51:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2005278688, now seen corresponding path program 1 times [2022-07-22 17:51:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 17:51:22,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070574599] [2022-07-22 17:51:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:51:22,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 17:51:22,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 17:51:22,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 17:51:22,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-22 17:51:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:51:22,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 17:51:22,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:51:22,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 17:51:22,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-22 17:51:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:51:22,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:51:22,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 17:51:22,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070574599] [2022-07-22 17:51:22,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070574599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:51:22,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:51:22,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:51:22,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037940291] [2022-07-22 17:51:22,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:51:22,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:51:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 17:51:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:51:22,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:51:22,824 INFO L87 Difference]: Start difference. First operand 224 states and 317 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:51:24,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:51:26,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:51:28,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:51:30,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:51:32,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:51:34,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:51:41,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:51:41,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:51:41,934 INFO L93 Difference]: Finished difference Result 444 states and 630 transitions. [2022-07-22 17:51:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:51:41,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-22 17:51:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:51:41,938 INFO L225 Difference]: With dead ends: 444 [2022-07-22 17:51:41,939 INFO L226 Difference]: Without dead ends: 230 [2022-07-22 17:51:41,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:51:41,940 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 19 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:51:41,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 860 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 2 Unknown, 0 Unchecked, 19.0s Time] [2022-07-22 17:51:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-22 17:51:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2022-07-22 17:51:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 164 states have (on average 1.3231707317073171) internal successors, (217), 171 states have internal predecessors, (217), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (61), 35 states have call predecessors, (61), 38 states have call successors, (61) [2022-07-22 17:51:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2022-07-22 17:51:41,959 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 38 [2022-07-22 17:51:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:51:41,959 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2022-07-22 17:51:41,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:51:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2022-07-22 17:51:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 17:51:41,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:51:41,962 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:51:41,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:51:42,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 17:51:42,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:51:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:51:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash -773790690, now seen corresponding path program 1 times [2022-07-22 17:51:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 17:51:42,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532373416] [2022-07-22 17:51:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:51:42,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 17:51:42,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 17:51:42,179 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 17:51:42,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-22 17:51:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:51:42,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 17:51:42,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:51:42,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 17:51:42,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 17:51:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:51:42,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:51:42,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 17:51:42,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532373416] [2022-07-22 17:51:42,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532373416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:51:42,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:51:42,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:51:42,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083236518] [2022-07-22 17:51:42,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:51:42,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:51:42,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 17:51:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:51:42,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:51:42,490 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:51:43,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 17:51:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:51:53,665 INFO L93 Difference]: Finished difference Result 441 states and 654 transitions. [2022-07-22 17:51:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:51:53,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-22 17:51:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:51:53,669 INFO L225 Difference]: With dead ends: 441 [2022-07-22 17:51:53,669 INFO L226 Difference]: Without dead ends: 232 [2022-07-22 17:51:53,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:51:53,670 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 23 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:51:53,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 841 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-07-22 17:51:53,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-22 17:51:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2022-07-22 17:51:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 166 states have (on average 1.3072289156626506) internal successors, (217), 172 states have internal predecessors, (217), 42 states have call successors, (42), 21 states have call predecessors, (42), 20 states have return successors, (61), 35 states have call predecessors, (61), 38 states have call successors, (61) [2022-07-22 17:51:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 320 transitions. [2022-07-22 17:51:53,692 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 320 transitions. Word has length 38 [2022-07-22 17:51:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:51:53,692 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 320 transitions. [2022-07-22 17:51:53,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:51:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 320 transitions. [2022-07-22 17:51:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 17:51:53,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:51:53,694 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:51:53,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:51:53,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 17:51:53,906 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:51:53,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:51:53,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1418952031, now seen corresponding path program 1 times [2022-07-22 17:51:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 17:51:53,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280721912] [2022-07-22 17:51:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:51:53,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 17:51:53,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 17:51:53,908 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 17:51:53,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-22 17:51:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:51:54,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 17:51:54,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:51:54,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 17:51:54,387 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-22 17:51:54,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-22 17:51:54,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 17:51:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:51:54,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:51:56,520 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| (_ BitVec 32))) (not (= (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset) ~sys_state_s~0~AS_IDLE))) is different from false [2022-07-22 17:51:58,534 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| (_ BitVec 32))) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) (_ bv0 32) ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2022-07-22 17:52:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:00,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 17:52:00,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280721912] [2022-07-22 17:52:00,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280721912] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 17:52:00,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:52:00,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-07-22 17:52:00,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987750087] [2022-07-22 17:52:00,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:00,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:52:00,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 17:52:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:52:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2022-07-22 17:52:00,725 INFO L87 Difference]: Start difference. First operand 229 states and 320 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)