./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_6.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/openssl-simplified/s3_srvr_6.cil-2.c -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 d0f2e33ac87f1f1d9db23cfd04cd47631e40f0ab807306c8f57e0f0ac0650234 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 21:59:16,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 21:59:16,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 21:59:16,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 21:59:16,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 21:59:16,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 21:59:16,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 21:59:16,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 21:59:16,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 21:59:16,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 21:59:16,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 21:59:16,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 21:59:16,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 21:59:16,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 21:59:16,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 21:59:16,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 21:59:16,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 21:59:16,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 21:59:16,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 21:59:16,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 21:59:16,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 21:59:16,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 21:59:16,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 21:59:16,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 21:59:16,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 21:59:16,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 21:59:16,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 21:59:16,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 21:59:16,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 21:59:16,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 21:59:16,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 21:59:16,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 21:59:16,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 21:59:16,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 21:59:16,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 21:59:16,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 21:59:16,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 21:59:16,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 21:59:16,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 21:59:16,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 21:59:16,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 21:59:16,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 21:59:16,312 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 21:59:16,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 21:59:16,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 21:59:16,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 21:59:16,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 21:59:16,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 21:59:16,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 21:59:16,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 21:59:16,314 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 21:59:16,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 21:59:16,322 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 21:59:16,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 21:59:16,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 21:59:16,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 21:59:16,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 21:59:16,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 21:59:16,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 21:59:16,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 21:59:16,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 21:59:16,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 21:59:16,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 21:59:16,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 21:59:16,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 21:59:16,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 21:59:16,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 21:59:16,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 21:59:16,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 21:59:16,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 21:59:16,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 21:59:16,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 21:59:16,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 21:59:16,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 21:59:16,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 21:59:16,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 21:59:16,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0f2e33ac87f1f1d9db23cfd04cd47631e40f0ab807306c8f57e0f0ac0650234 [2021-12-15 21:59:16,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 21:59:16,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 21:59:16,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 21:59:16,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 21:59:16,580 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 21:59:16,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_6.cil-2.c [2021-12-15 21:59:16,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c205de6ee/f457e282b679448e9891ba0d05d96de9/FLAG573a55c3a [2021-12-15 21:59:17,116 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 21:59:17,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_6.cil-2.c [2021-12-15 21:59:17,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c205de6ee/f457e282b679448e9891ba0d05d96de9/FLAG573a55c3a [2021-12-15 21:59:17,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c205de6ee/f457e282b679448e9891ba0d05d96de9 [2021-12-15 21:59:17,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 21:59:17,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 21:59:17,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 21:59:17,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 21:59:17,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 21:59:17,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c8201bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17, skipping insertion in model container [2021-12-15 21:59:17,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 21:59:17,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 21:59:17,737 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/openssl-simplified/s3_srvr_6.cil-2.c[48455,48468] [2021-12-15 21:59:17,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 21:59:17,752 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 21:59:17,793 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/openssl-simplified/s3_srvr_6.cil-2.c[48455,48468] [2021-12-15 21:59:17,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 21:59:17,808 INFO L208 MainTranslator]: Completed translation [2021-12-15 21:59:17,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17 WrapperNode [2021-12-15 21:59:17,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 21:59:17,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 21:59:17,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 21:59:17,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 21:59:17,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,875 INFO L137 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 580 [2021-12-15 21:59:17,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 21:59:17,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 21:59:17,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 21:59:17,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 21:59:17,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 21:59:17,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 21:59:17,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 21:59:17,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 21:59:17,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (1/1) ... [2021-12-15 21:59:17,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 21:59:17,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:17,960 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) [2021-12-15 21:59:17,961 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 [2021-12-15 21:59:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 21:59:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 21:59:17,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 21:59:17,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 21:59:18,108 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 21:59:18,109 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 21:59:18,124 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 21:59:18,534 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-12-15 21:59:18,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-12-15 21:59:18,535 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 21:59:18,542 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 21:59:18,542 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 21:59:18,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:59:18 BoogieIcfgContainer [2021-12-15 21:59:18,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 21:59:18,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 21:59:18,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 21:59:18,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 21:59:18,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:59:17" (1/3) ... [2021-12-15 21:59:18,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335beed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:59:18, skipping insertion in model container [2021-12-15 21:59:18,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:59:17" (2/3) ... [2021-12-15 21:59:18,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335beed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:59:18, skipping insertion in model container [2021-12-15 21:59:18,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:59:18" (3/3) ... [2021-12-15 21:59:18,552 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_6.cil-2.c [2021-12-15 21:59:18,557 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 21:59:18,557 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 21:59:18,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 21:59:18,607 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 21:59:18,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 21:59:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 156 states have (on average 1.7564102564102564) internal successors, (274), 157 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 21:59:18,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:18,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:18,653 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:18,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash -443745208, now seen corresponding path program 1 times [2021-12-15 21:59:18,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:18,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098007062] [2021-12-15 21:59:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:18,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 21:59:18,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:18,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098007062] [2021-12-15 21:59:18,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098007062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:18,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:18,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:18,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556300883] [2021-12-15 21:59:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:18,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:18,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:18,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:18,965 INFO L87 Difference]: Start difference. First operand has 158 states, 156 states have (on average 1.7564102564102564) internal successors, (274), 157 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:19,174 INFO L93 Difference]: Finished difference Result 336 states and 582 transitions. [2021-12-15 21:59:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:19,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-15 21:59:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:19,192 INFO L225 Difference]: With dead ends: 336 [2021-12-15 21:59:19,192 INFO L226 Difference]: Without dead ends: 166 [2021-12-15 21:59:19,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:19,200 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 31 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:19,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 434 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-15 21:59:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2021-12-15 21:59:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-12-15 21:59:19,247 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 44 [2021-12-15 21:59:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:19,249 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-12-15 21:59:19,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-12-15 21:59:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-15 21:59:19,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:19,254 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 21:59:19,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 21:59:19,256 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1030632600, now seen corresponding path program 1 times [2021-12-15 21:59:19,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327466849] [2021-12-15 21:59:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:19,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 21:59:19,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:19,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327466849] [2021-12-15 21:59:19,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327466849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:19,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:19,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:19,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542108968] [2021-12-15 21:59:19,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:19,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:19,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:19,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:19,341 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:19,493 INFO L93 Difference]: Finished difference Result 343 states and 538 transitions. [2021-12-15 21:59:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:19,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-15 21:59:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:19,500 INFO L225 Difference]: With dead ends: 343 [2021-12-15 21:59:19,500 INFO L226 Difference]: Without dead ends: 188 [2021-12-15 21:59:19,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:19,509 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 14 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:19,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 360 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-15 21:59:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2021-12-15 21:59:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.5245901639344261) internal successors, (279), 183 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 279 transitions. [2021-12-15 21:59:19,537 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 279 transitions. Word has length 60 [2021-12-15 21:59:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:19,543 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 279 transitions. [2021-12-15 21:59:19,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 279 transitions. [2021-12-15 21:59:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-15 21:59:19,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:19,546 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-15 21:59:19,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 21:59:19,547 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:19,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:19,547 INFO L85 PathProgramCache]: Analyzing trace with hash 18153750, now seen corresponding path program 1 times [2021-12-15 21:59:19,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:19,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555907513] [2021-12-15 21:59:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:19,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-15 21:59:19,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:19,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555907513] [2021-12-15 21:59:19,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555907513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:19,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:19,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:19,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652399079] [2021-12-15 21:59:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:19,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:19,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:19,662 INFO L87 Difference]: Start difference. First operand 184 states and 279 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:19,818 INFO L93 Difference]: Finished difference Result 415 states and 642 transitions. [2021-12-15 21:59:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:19,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-15 21:59:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:19,820 INFO L225 Difference]: With dead ends: 415 [2021-12-15 21:59:19,820 INFO L226 Difference]: Without dead ends: 239 [2021-12-15 21:59:19,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:19,822 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 54 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:19,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 325 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-15 21:59:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 225. [2021-12-15 21:59:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4642857142857142) internal successors, (328), 224 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 328 transitions. [2021-12-15 21:59:19,833 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 328 transitions. Word has length 81 [2021-12-15 21:59:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:19,834 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 328 transitions. [2021-12-15 21:59:19,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 328 transitions. [2021-12-15 21:59:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-15 21:59:19,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:19,836 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-15 21:59:19,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 21:59:19,837 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:19,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash 266300244, now seen corresponding path program 1 times [2021-12-15 21:59:19,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:19,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501186872] [2021-12-15 21:59:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:19,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-15 21:59:19,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:19,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501186872] [2021-12-15 21:59:19,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501186872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:19,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:19,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:19,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459468779] [2021-12-15 21:59:19,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:19,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:19,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:19,926 INFO L87 Difference]: Start difference. First operand 225 states and 328 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:20,041 INFO L93 Difference]: Finished difference Result 470 states and 693 transitions. [2021-12-15 21:59:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:20,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-15 21:59:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:20,044 INFO L225 Difference]: With dead ends: 470 [2021-12-15 21:59:20,044 INFO L226 Difference]: Without dead ends: 253 [2021-12-15 21:59:20,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,046 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 16 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:20,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 376 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-12-15 21:59:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2021-12-15 21:59:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.4412955465587045) internal successors, (356), 247 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 356 transitions. [2021-12-15 21:59:20,055 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 356 transitions. Word has length 81 [2021-12-15 21:59:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:20,056 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 356 transitions. [2021-12-15 21:59:20,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 356 transitions. [2021-12-15 21:59:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 21:59:20,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:20,058 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-12-15 21:59:20,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 21:59:20,058 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:20,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1493528062, now seen corresponding path program 1 times [2021-12-15 21:59:20,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:20,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631909810] [2021-12-15 21:59:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:20,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-15 21:59:20,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:20,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631909810] [2021-12-15 21:59:20,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631909810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:20,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:20,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:20,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408786292] [2021-12-15 21:59:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:20,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:20,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:20,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,111 INFO L87 Difference]: Start difference. First operand 248 states and 356 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:20,275 INFO L93 Difference]: Finished difference Result 587 states and 852 transitions. [2021-12-15 21:59:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:20,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-15 21:59:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:20,277 INFO L225 Difference]: With dead ends: 587 [2021-12-15 21:59:20,278 INFO L226 Difference]: Without dead ends: 344 [2021-12-15 21:59:20,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,279 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 182 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:20,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 208 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-15 21:59:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 336. [2021-12-15 21:59:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.4417910447761193) internal successors, (483), 335 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 483 transitions. [2021-12-15 21:59:20,289 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 483 transitions. Word has length 94 [2021-12-15 21:59:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:20,289 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 483 transitions. [2021-12-15 21:59:20,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 483 transitions. [2021-12-15 21:59:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-15 21:59:20,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:20,291 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-12-15 21:59:20,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 21:59:20,292 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:20,292 INFO L85 PathProgramCache]: Analyzing trace with hash -377706052, now seen corresponding path program 1 times [2021-12-15 21:59:20,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:20,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038716640] [2021-12-15 21:59:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:20,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-15 21:59:20,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:20,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038716640] [2021-12-15 21:59:20,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038716640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:20,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:20,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:20,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991263385] [2021-12-15 21:59:20,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:20,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:20,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,337 INFO L87 Difference]: Start difference. First operand 336 states and 483 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:20,453 INFO L93 Difference]: Finished difference Result 703 states and 1020 transitions. [2021-12-15 21:59:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:20,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-12-15 21:59:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:20,456 INFO L225 Difference]: With dead ends: 703 [2021-12-15 21:59:20,457 INFO L226 Difference]: Without dead ends: 375 [2021-12-15 21:59:20,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,458 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 32 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:20,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 375 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:20,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-15 21:59:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 361. [2021-12-15 21:59:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.425) internal successors, (513), 360 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 513 transitions. [2021-12-15 21:59:20,468 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 513 transitions. Word has length 102 [2021-12-15 21:59:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:20,469 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 513 transitions. [2021-12-15 21:59:20,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 513 transitions. [2021-12-15 21:59:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-15 21:59:20,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:20,471 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-15 21:59:20,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 21:59:20,472 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 903169840, now seen corresponding path program 1 times [2021-12-15 21:59:20,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:20,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145811784] [2021-12-15 21:59:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:20,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-15 21:59:20,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:20,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145811784] [2021-12-15 21:59:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145811784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:20,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:20,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:20,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420445174] [2021-12-15 21:59:20,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:20,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:20,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,516 INFO L87 Difference]: Start difference. First operand 361 states and 513 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:20,534 INFO L93 Difference]: Finished difference Result 1060 states and 1502 transitions. [2021-12-15 21:59:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-12-15 21:59:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:20,538 INFO L225 Difference]: With dead ends: 1060 [2021-12-15 21:59:20,538 INFO L226 Difference]: Without dead ends: 707 [2021-12-15 21:59:20,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,540 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 202 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:20,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 653 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 21:59:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-12-15 21:59:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 362. [2021-12-15 21:59:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.4238227146814404) internal successors, (514), 361 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 514 transitions. [2021-12-15 21:59:20,552 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 514 transitions. Word has length 128 [2021-12-15 21:59:20,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:20,553 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 514 transitions. [2021-12-15 21:59:20,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,553 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 514 transitions. [2021-12-15 21:59:20,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-15 21:59:20,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:20,557 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-15 21:59:20,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 21:59:20,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1796656178, now seen corresponding path program 1 times [2021-12-15 21:59:20,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318306121] [2021-12-15 21:59:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:20,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-15 21:59:20,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:20,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318306121] [2021-12-15 21:59:20,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318306121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:20,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:20,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:20,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270667152] [2021-12-15 21:59:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:20,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:20,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,601 INFO L87 Difference]: Start difference. First operand 362 states and 514 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:20,704 INFO L93 Difference]: Finished difference Result 752 states and 1078 transitions. [2021-12-15 21:59:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:20,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-12-15 21:59:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:20,707 INFO L225 Difference]: With dead ends: 752 [2021-12-15 21:59:20,707 INFO L226 Difference]: Without dead ends: 398 [2021-12-15 21:59:20,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,709 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 21 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:20,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 375 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:20,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-15 21:59:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 389. [2021-12-15 21:59:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.407216494845361) internal successors, (546), 388 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 546 transitions. [2021-12-15 21:59:20,719 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 546 transitions. Word has length 128 [2021-12-15 21:59:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:20,720 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 546 transitions. [2021-12-15 21:59:20,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 546 transitions. [2021-12-15 21:59:20,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-15 21:59:20,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:20,722 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:20,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 21:59:20,723 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:20,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash -112871130, now seen corresponding path program 1 times [2021-12-15 21:59:20,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044476146] [2021-12-15 21:59:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:20,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 21:59:20,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:20,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044476146] [2021-12-15 21:59:20,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044476146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:20,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:20,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:20,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020893203] [2021-12-15 21:59:20,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:20,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:20,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:20,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:20,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,776 INFO L87 Difference]: Start difference. First operand 389 states and 546 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:20,850 INFO L93 Difference]: Finished difference Result 1148 states and 1612 transitions. [2021-12-15 21:59:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-12-15 21:59:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:20,855 INFO L225 Difference]: With dead ends: 1148 [2021-12-15 21:59:20,855 INFO L226 Difference]: Without dead ends: 767 [2021-12-15 21:59:20,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,858 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 153 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:20,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 513 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-12-15 21:59:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2021-12-15 21:59:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 1.3785900783289817) internal successors, (1056), 766 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1056 transitions. [2021-12-15 21:59:20,878 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1056 transitions. Word has length 134 [2021-12-15 21:59:20,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:20,878 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 1056 transitions. [2021-12-15 21:59:20,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,879 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1056 transitions. [2021-12-15 21:59:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-15 21:59:20,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:20,881 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:20,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 21:59:20,881 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:20,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1488199976, now seen corresponding path program 1 times [2021-12-15 21:59:20,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:20,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056817494] [2021-12-15 21:59:20,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:20,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-15 21:59:20,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056817494] [2021-12-15 21:59:20,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056817494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:20,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:20,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:20,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496575477] [2021-12-15 21:59:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:20,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:20,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,933 INFO L87 Difference]: Start difference. First operand 767 states and 1056 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:20,978 INFO L93 Difference]: Finished difference Result 1550 states and 2130 transitions. [2021-12-15 21:59:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:20,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-12-15 21:59:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:20,982 INFO L225 Difference]: With dead ends: 1550 [2021-12-15 21:59:20,983 INFO L226 Difference]: Without dead ends: 791 [2021-12-15 21:59:20,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:20,985 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 10 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:20,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 424 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 21:59:20,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-12-15 21:59:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2021-12-15 21:59:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.3734177215189873) internal successors, (1085), 790 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1085 transitions. [2021-12-15 21:59:21,003 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1085 transitions. Word has length 134 [2021-12-15 21:59:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:21,003 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1085 transitions. [2021-12-15 21:59:21,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1085 transitions. [2021-12-15 21:59:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-15 21:59:21,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:21,006 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:21,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 21:59:21,006 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:21,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1155556838, now seen corresponding path program 1 times [2021-12-15 21:59:21,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:21,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025578675] [2021-12-15 21:59:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:21,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-15 21:59:21,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:21,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025578675] [2021-12-15 21:59:21,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025578675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:21,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:21,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:21,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439323141] [2021-12-15 21:59:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:21,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:21,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:21,070 INFO L87 Difference]: Start difference. First operand 791 states and 1085 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:21,116 INFO L93 Difference]: Finished difference Result 1587 states and 2172 transitions. [2021-12-15 21:59:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:21,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-12-15 21:59:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:21,119 INFO L225 Difference]: With dead ends: 1587 [2021-12-15 21:59:21,120 INFO L226 Difference]: Without dead ends: 804 [2021-12-15 21:59:21,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:21,122 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 6 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:21,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 404 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 21:59:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-12-15 21:59:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2021-12-15 21:59:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 1.3673723536737235) internal successors, (1098), 803 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1098 transitions. [2021-12-15 21:59:21,142 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1098 transitions. Word has length 134 [2021-12-15 21:59:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:21,142 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1098 transitions. [2021-12-15 21:59:21,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1098 transitions. [2021-12-15 21:59:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-15 21:59:21,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:21,145 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-15 21:59:21,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 21:59:21,146 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1986637546, now seen corresponding path program 1 times [2021-12-15 21:59:21,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:21,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848507179] [2021-12-15 21:59:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:21,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-15 21:59:21,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:21,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848507179] [2021-12-15 21:59:21,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848507179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:21,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:21,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:21,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908178622] [2021-12-15 21:59:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:21,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:21,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:21,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:21,190 INFO L87 Difference]: Start difference. First operand 804 states and 1098 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:21,294 INFO L93 Difference]: Finished difference Result 1649 states and 2277 transitions. [2021-12-15 21:59:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:21,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-12-15 21:59:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:21,298 INFO L225 Difference]: With dead ends: 1649 [2021-12-15 21:59:21,299 INFO L226 Difference]: Without dead ends: 866 [2021-12-15 21:59:21,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:21,300 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 10 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:21,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 376 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-12-15 21:59:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 862. [2021-12-15 21:59:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 1.354239256678281) internal successors, (1166), 861 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1166 transitions. [2021-12-15 21:59:21,321 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1166 transitions. Word has length 153 [2021-12-15 21:59:21,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:21,322 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1166 transitions. [2021-12-15 21:59:21,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,322 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1166 transitions. [2021-12-15 21:59:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-15 21:59:21,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:21,325 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-15 21:59:21,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 21:59:21,325 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash -366759025, now seen corresponding path program 1 times [2021-12-15 21:59:21,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:21,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226311797] [2021-12-15 21:59:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:21,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-15 21:59:21,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:21,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226311797] [2021-12-15 21:59:21,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226311797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:21,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:21,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:21,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527211138] [2021-12-15 21:59:21,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:21,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:21,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:21,392 INFO L87 Difference]: Start difference. First operand 862 states and 1166 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:21,471 INFO L93 Difference]: Finished difference Result 2110 states and 2873 transitions. [2021-12-15 21:59:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-12-15 21:59:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:21,476 INFO L225 Difference]: With dead ends: 2110 [2021-12-15 21:59:21,476 INFO L226 Difference]: Without dead ends: 1269 [2021-12-15 21:59:21,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:21,479 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 157 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:21,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 584 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-12-15 21:59:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2021-12-15 21:59:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.3485804416403786) internal successors, (1710), 1268 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1710 transitions. [2021-12-15 21:59:21,512 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1710 transitions. Word has length 159 [2021-12-15 21:59:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:21,512 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1710 transitions. [2021-12-15 21:59:21,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1710 transitions. [2021-12-15 21:59:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-15 21:59:21,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:21,516 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-15 21:59:21,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 21:59:21,517 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash 81535942, now seen corresponding path program 1 times [2021-12-15 21:59:21,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:21,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781876349] [2021-12-15 21:59:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:21,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-15 21:59:21,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:21,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781876349] [2021-12-15 21:59:21,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781876349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:21,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:21,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:21,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665454406] [2021-12-15 21:59:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:21,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:21,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:21,571 INFO L87 Difference]: Start difference. First operand 1269 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:21,685 INFO L93 Difference]: Finished difference Result 2610 states and 3560 transitions. [2021-12-15 21:59:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:21,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-12-15 21:59:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:21,691 INFO L225 Difference]: With dead ends: 2610 [2021-12-15 21:59:21,691 INFO L226 Difference]: Without dead ends: 1362 [2021-12-15 21:59:21,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:21,694 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 15 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:21,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 370 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-12-15 21:59:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2021-12-15 21:59:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 1.3357825128581926) internal successors, (1818), 1361 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1818 transitions. [2021-12-15 21:59:21,745 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1818 transitions. Word has length 160 [2021-12-15 21:59:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:21,745 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1818 transitions. [2021-12-15 21:59:21,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1818 transitions. [2021-12-15 21:59:21,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-15 21:59:21,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:21,749 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 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] [2021-12-15 21:59:21,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 21:59:21,749 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:21,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:21,750 INFO L85 PathProgramCache]: Analyzing trace with hash -212433663, now seen corresponding path program 1 times [2021-12-15 21:59:21,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:21,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991051547] [2021-12-15 21:59:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:21,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 174 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-15 21:59:21,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:21,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991051547] [2021-12-15 21:59:21,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991051547] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:21,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901993118] [2021-12-15 21:59:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:21,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:21,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:21,808 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) [2021-12-15 21:59:21,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 21:59:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:21,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 21:59:21,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-15 21:59:22,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:22,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901993118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:22,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:22,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:22,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527907479] [2021-12-15 21:59:22,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:22,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:22,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:22,326 INFO L87 Difference]: Start difference. First operand 1362 states and 1818 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:22,424 INFO L93 Difference]: Finished difference Result 3142 states and 4214 transitions. [2021-12-15 21:59:22,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:22,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-12-15 21:59:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:22,447 INFO L225 Difference]: With dead ends: 3142 [2021-12-15 21:59:22,447 INFO L226 Difference]: Without dead ends: 1801 [2021-12-15 21:59:22,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:22,449 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 163 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:22,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 377 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2021-12-15 21:59:22,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1801. [2021-12-15 21:59:22,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 1.336111111111111) internal successors, (2405), 1800 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2405 transitions. [2021-12-15 21:59:22,491 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2405 transitions. Word has length 188 [2021-12-15 21:59:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:22,491 INFO L470 AbstractCegarLoop]: Abstraction has 1801 states and 2405 transitions. [2021-12-15 21:59:22,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2405 transitions. [2021-12-15 21:59:22,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-15 21:59:22,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:22,497 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 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] [2021-12-15 21:59:22,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:22,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-15 21:59:22,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1056148917, now seen corresponding path program 1 times [2021-12-15 21:59:22,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962377075] [2021-12-15 21:59:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:22,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-12-15 21:59:22,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:22,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962377075] [2021-12-15 21:59:22,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962377075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:22,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:22,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:22,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594785921] [2021-12-15 21:59:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:22,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:22,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:22,775 INFO L87 Difference]: Start difference. First operand 1801 states and 2405 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:22,898 INFO L93 Difference]: Finished difference Result 3674 states and 4932 transitions. [2021-12-15 21:59:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:22,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2021-12-15 21:59:22,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:22,907 INFO L225 Difference]: With dead ends: 3674 [2021-12-15 21:59:22,907 INFO L226 Difference]: Without dead ends: 1894 [2021-12-15 21:59:22,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:22,911 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:22,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 380 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:22,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-12-15 21:59:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1881. [2021-12-15 21:59:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 1.3324468085106382) internal successors, (2505), 1880 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2505 transitions. [2021-12-15 21:59:22,970 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2505 transitions. Word has length 219 [2021-12-15 21:59:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:22,970 INFO L470 AbstractCegarLoop]: Abstraction has 1881 states and 2505 transitions. [2021-12-15 21:59:22,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2505 transitions. [2021-12-15 21:59:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-15 21:59:22,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:22,977 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 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] [2021-12-15 21:59:22,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 21:59:22,977 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash -56399009, now seen corresponding path program 1 times [2021-12-15 21:59:22,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:22,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508581927] [2021-12-15 21:59:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:22,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-12-15 21:59:23,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:23,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508581927] [2021-12-15 21:59:23,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508581927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:23,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:23,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:23,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180994336] [2021-12-15 21:59:23,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:23,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:23,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:23,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:23,033 INFO L87 Difference]: Start difference. First operand 1881 states and 2505 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:23,178 INFO L93 Difference]: Finished difference Result 3889 states and 5242 transitions. [2021-12-15 21:59:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:23,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2021-12-15 21:59:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:23,187 INFO L225 Difference]: With dead ends: 3889 [2021-12-15 21:59:23,187 INFO L226 Difference]: Without dead ends: 2029 [2021-12-15 21:59:23,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:23,190 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:23,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 376 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-12-15 21:59:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2017. [2021-12-15 21:59:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 2016 states have (on average 1.3199404761904763) internal successors, (2661), 2016 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2661 transitions. [2021-12-15 21:59:23,236 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2661 transitions. Word has length 221 [2021-12-15 21:59:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:23,237 INFO L470 AbstractCegarLoop]: Abstraction has 2017 states and 2661 transitions. [2021-12-15 21:59:23,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2661 transitions. [2021-12-15 21:59:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-12-15 21:59:23,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:23,243 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 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] [2021-12-15 21:59:23,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 21:59:23,243 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash 364997896, now seen corresponding path program 1 times [2021-12-15 21:59:23,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:23,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836854511] [2021-12-15 21:59:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:23,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-12-15 21:59:23,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:23,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836854511] [2021-12-15 21:59:23,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836854511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:23,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:23,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:23,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800318866] [2021-12-15 21:59:23,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:23,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:23,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:23,295 INFO L87 Difference]: Start difference. First operand 2017 states and 2661 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:23,449 INFO L93 Difference]: Finished difference Result 4169 states and 5570 transitions. [2021-12-15 21:59:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:23,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2021-12-15 21:59:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:23,458 INFO L225 Difference]: With dead ends: 4169 [2021-12-15 21:59:23,458 INFO L226 Difference]: Without dead ends: 2173 [2021-12-15 21:59:23,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:23,461 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:23,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 376 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2021-12-15 21:59:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 2161. [2021-12-15 21:59:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 2160 states have (on average 1.3078703703703705) internal successors, (2825), 2160 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2825 transitions. [2021-12-15 21:59:23,510 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2825 transitions. Word has length 253 [2021-12-15 21:59:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:23,510 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 2825 transitions. [2021-12-15 21:59:23,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2825 transitions. [2021-12-15 21:59:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-15 21:59:23,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:23,517 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:23,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 21:59:23,518 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:23,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:23,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1220311239, now seen corresponding path program 1 times [2021-12-15 21:59:23,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:23,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499058557] [2021-12-15 21:59:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:23,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2021-12-15 21:59:23,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:23,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499058557] [2021-12-15 21:59:23,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499058557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:23,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:23,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:23,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094976650] [2021-12-15 21:59:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:23,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:23,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:23,568 INFO L87 Difference]: Start difference. First operand 2161 states and 2825 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:23,663 INFO L93 Difference]: Finished difference Result 4822 states and 6320 transitions. [2021-12-15 21:59:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:23,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2021-12-15 21:59:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:23,674 INFO L225 Difference]: With dead ends: 4822 [2021-12-15 21:59:23,675 INFO L226 Difference]: Without dead ends: 2682 [2021-12-15 21:59:23,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:23,680 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 151 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:23,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 583 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-12-15 21:59:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2682. [2021-12-15 21:59:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2681 states have (on average 1.3062290190227528) internal successors, (3502), 2681 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 3502 transitions. [2021-12-15 21:59:23,741 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 3502 transitions. Word has length 287 [2021-12-15 21:59:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:23,741 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 3502 transitions. [2021-12-15 21:59:23,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 3502 transitions. [2021-12-15 21:59:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-15 21:59:23,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:23,749 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:23,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 21:59:23,750 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:23,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:23,750 INFO L85 PathProgramCache]: Analyzing trace with hash -972164745, now seen corresponding path program 1 times [2021-12-15 21:59:23,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:23,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326530870] [2021-12-15 21:59:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:23,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-12-15 21:59:23,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:23,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326530870] [2021-12-15 21:59:23,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326530870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:23,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:23,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:23,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374165186] [2021-12-15 21:59:23,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:23,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:23,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:23,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:23,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:23,812 INFO L87 Difference]: Start difference. First operand 2682 states and 3502 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:23,883 INFO L93 Difference]: Finished difference Result 5382 states and 7024 transitions. [2021-12-15 21:59:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:23,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2021-12-15 21:59:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:23,894 INFO L225 Difference]: With dead ends: 5382 [2021-12-15 21:59:23,895 INFO L226 Difference]: Without dead ends: 2721 [2021-12-15 21:59:23,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:23,900 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 10 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:23,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 457 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 21:59:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2021-12-15 21:59:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2021-12-15 21:59:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2720 states have (on average 1.3036764705882353) internal successors, (3546), 2720 states have internal predecessors, (3546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3546 transitions. [2021-12-15 21:59:23,966 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3546 transitions. Word has length 287 [2021-12-15 21:59:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:23,966 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 3546 transitions. [2021-12-15 21:59:23,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3546 transitions. [2021-12-15 21:59:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-15 21:59:23,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:23,974 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:23,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-15 21:59:23,974 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1245465653, now seen corresponding path program 1 times [2021-12-15 21:59:23,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:23,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631650638] [2021-12-15 21:59:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:23,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-15 21:59:24,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:24,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631650638] [2021-12-15 21:59:24,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631650638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:24,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:24,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:24,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719017340] [2021-12-15 21:59:24,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:24,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:24,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:24,026 INFO L87 Difference]: Start difference. First operand 2721 states and 3546 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:24,093 INFO L93 Difference]: Finished difference Result 5458 states and 7110 transitions. [2021-12-15 21:59:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:24,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2021-12-15 21:59:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:24,105 INFO L225 Difference]: With dead ends: 5458 [2021-12-15 21:59:24,105 INFO L226 Difference]: Without dead ends: 2758 [2021-12-15 21:59:24,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:24,110 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 10 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:24,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 455 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 21:59:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2021-12-15 21:59:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 2758. [2021-12-15 21:59:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2757 states have (on average 1.3014145810663764) internal successors, (3588), 2757 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3588 transitions. [2021-12-15 21:59:24,192 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3588 transitions. Word has length 287 [2021-12-15 21:59:24,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:24,192 INFO L470 AbstractCegarLoop]: Abstraction has 2758 states and 3588 transitions. [2021-12-15 21:59:24,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3588 transitions. [2021-12-15 21:59:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-15 21:59:24,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:24,200 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:24,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-15 21:59:24,201 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash -727699725, now seen corresponding path program 1 times [2021-12-15 21:59:24,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:24,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992148932] [2021-12-15 21:59:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:24,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-12-15 21:59:24,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:24,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992148932] [2021-12-15 21:59:24,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992148932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:24,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:24,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:24,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315061318] [2021-12-15 21:59:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:24,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:24,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:24,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:24,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:24,250 INFO L87 Difference]: Start difference. First operand 2758 states and 3588 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:24,363 INFO L93 Difference]: Finished difference Result 5989 states and 7819 transitions. [2021-12-15 21:59:24,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:24,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2021-12-15 21:59:24,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:24,388 INFO L225 Difference]: With dead ends: 5989 [2021-12-15 21:59:24,389 INFO L226 Difference]: Without dead ends: 3252 [2021-12-15 21:59:24,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:24,394 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 191 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:24,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 586 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2021-12-15 21:59:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 3252. [2021-12-15 21:59:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 3251 states have (on average 1.3023685019993847) internal successors, (4234), 3251 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 4234 transitions. [2021-12-15 21:59:24,494 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 4234 transitions. Word has length 287 [2021-12-15 21:59:24,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:24,495 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 4234 transitions. [2021-12-15 21:59:24,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 4234 transitions. [2021-12-15 21:59:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-12-15 21:59:24,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:24,505 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 4, 4, 3, 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, 1] [2021-12-15 21:59:24,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-15 21:59:24,506 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash 404364874, now seen corresponding path program 1 times [2021-12-15 21:59:24,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:24,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835546751] [2021-12-15 21:59:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:24,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2021-12-15 21:59:24,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:24,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835546751] [2021-12-15 21:59:24,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835546751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:24,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:24,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:24,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080169547] [2021-12-15 21:59:24,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:24,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:24,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:24,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:24,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:24,579 INFO L87 Difference]: Start difference. First operand 3252 states and 4234 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:24,653 INFO L93 Difference]: Finished difference Result 9515 states and 12418 transitions. [2021-12-15 21:59:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:24,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 325 [2021-12-15 21:59:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:24,669 INFO L225 Difference]: With dead ends: 9515 [2021-12-15 21:59:24,669 INFO L226 Difference]: Without dead ends: 6284 [2021-12-15 21:59:24,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:24,676 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 135 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:24,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 599 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 21:59:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2021-12-15 21:59:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 6282. [2021-12-15 21:59:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6282 states, 6281 states have (on average 1.3040917051424932) internal successors, (8191), 6281 states have internal predecessors, (8191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 8191 transitions. [2021-12-15 21:59:24,847 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 8191 transitions. Word has length 325 [2021-12-15 21:59:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:24,848 INFO L470 AbstractCegarLoop]: Abstraction has 6282 states and 8191 transitions. [2021-12-15 21:59:24,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 8191 transitions. [2021-12-15 21:59:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-12-15 21:59:24,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:24,863 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:24,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-15 21:59:24,863 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:24,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1994061044, now seen corresponding path program 1 times [2021-12-15 21:59:24,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:24,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809255080] [2021-12-15 21:59:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:24,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-12-15 21:59:24,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809255080] [2021-12-15 21:59:24,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809255080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:24,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 21:59:24,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 21:59:24,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971684121] [2021-12-15 21:59:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:24,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:24,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:24,942 INFO L87 Difference]: Start difference. First operand 6282 states and 8191 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:25,140 INFO L93 Difference]: Finished difference Result 12675 states and 16533 transitions. [2021-12-15 21:59:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2021-12-15 21:59:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:25,155 INFO L225 Difference]: With dead ends: 12675 [2021-12-15 21:59:25,156 INFO L226 Difference]: Without dead ends: 6402 [2021-12-15 21:59:25,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 21:59:25,167 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 174 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:25,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 227 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-12-15 21:59:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6318. [2021-12-15 21:59:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 6317 states have (on average 1.300459078676587) internal successors, (8215), 6317 states have internal predecessors, (8215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 8215 transitions. [2021-12-15 21:59:25,338 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 8215 transitions. Word has length 378 [2021-12-15 21:59:25,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:25,338 INFO L470 AbstractCegarLoop]: Abstraction has 6318 states and 8215 transitions. [2021-12-15 21:59:25,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 8215 transitions. [2021-12-15 21:59:25,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-12-15 21:59:25,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:25,358 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:25,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-15 21:59:25,359 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:25,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash 746027085, now seen corresponding path program 1 times [2021-12-15 21:59:25,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:25,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487697556] [2021-12-15 21:59:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:25,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 572 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-12-15 21:59:25,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:25,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487697556] [2021-12-15 21:59:25,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487697556] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:25,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045156978] [2021-12-15 21:59:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:25,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:25,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:25,443 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) [2021-12-15 21:59:25,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 21:59:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:25,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 21:59:25,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2021-12-15 21:59:26,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:26,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045156978] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:26,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:26,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:26,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125345078] [2021-12-15 21:59:26,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:26,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:26,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:26,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:26,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:26,368 INFO L87 Difference]: Start difference. First operand 6318 states and 8215 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:26,541 INFO L93 Difference]: Finished difference Result 13652 states and 17790 transitions. [2021-12-15 21:59:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:26,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 435 [2021-12-15 21:59:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:26,557 INFO L225 Difference]: With dead ends: 13652 [2021-12-15 21:59:26,557 INFO L226 Difference]: Without dead ends: 7355 [2021-12-15 21:59:26,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:26,565 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 161 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:26,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 370 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2021-12-15 21:59:26,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7355. [2021-12-15 21:59:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7355 states, 7354 states have (on average 1.3029643731302691) internal successors, (9582), 7354 states have internal predecessors, (9582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7355 states to 7355 states and 9582 transitions. [2021-12-15 21:59:26,729 INFO L78 Accepts]: Start accepts. Automaton has 7355 states and 9582 transitions. Word has length 435 [2021-12-15 21:59:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:26,730 INFO L470 AbstractCegarLoop]: Abstraction has 7355 states and 9582 transitions. [2021-12-15 21:59:26,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:26,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7355 states and 9582 transitions. [2021-12-15 21:59:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-12-15 21:59:26,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:26,749 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 8, 7, 7, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:26,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:26,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-15 21:59:26,980 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:26,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:26,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1181176621, now seen corresponding path program 1 times [2021-12-15 21:59:26,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:26,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95176230] [2021-12-15 21:59:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:26,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 1281 proven. 18 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2021-12-15 21:59:27,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:27,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95176230] [2021-12-15 21:59:27,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95176230] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:27,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160783998] [2021-12-15 21:59:27,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:27,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:27,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:27,062 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) [2021-12-15 21:59:27,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 21:59:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:27,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 21:59:27,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 1629 trivial. 0 not checked. [2021-12-15 21:59:27,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:27,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160783998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:27,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:27,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:27,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829411053] [2021-12-15 21:59:27,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:27,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:27,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:27,798 INFO L87 Difference]: Start difference. First operand 7355 states and 9582 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:27,945 INFO L93 Difference]: Finished difference Result 15726 states and 20506 transitions. [2021-12-15 21:59:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:27,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 480 [2021-12-15 21:59:27,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:27,962 INFO L225 Difference]: With dead ends: 15726 [2021-12-15 21:59:27,962 INFO L226 Difference]: Without dead ends: 8392 [2021-12-15 21:59:27,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:27,972 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 167 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:28,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 372 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8392 states. [2021-12-15 21:59:28,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8392 to 8392. [2021-12-15 21:59:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8392 states, 8391 states have (on average 1.3043737337623644) internal successors, (10945), 8391 states have internal predecessors, (10945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8392 states to 8392 states and 10945 transitions. [2021-12-15 21:59:28,145 INFO L78 Accepts]: Start accepts. Automaton has 8392 states and 10945 transitions. Word has length 480 [2021-12-15 21:59:28,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:28,146 INFO L470 AbstractCegarLoop]: Abstraction has 8392 states and 10945 transitions. [2021-12-15 21:59:28,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:28,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8392 states and 10945 transitions. [2021-12-15 21:59:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2021-12-15 21:59:28,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:28,164 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:28,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:28,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:28,388 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:28,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash -349156580, now seen corresponding path program 1 times [2021-12-15 21:59:28,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:28,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497308610] [2021-12-15 21:59:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:28,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 1996 proven. 26 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2021-12-15 21:59:28,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:28,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497308610] [2021-12-15 21:59:28,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497308610] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:28,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425210240] [2021-12-15 21:59:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:28,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:28,489 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) [2021-12-15 21:59:28,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 21:59:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:28,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 21:59:28,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 2753 trivial. 0 not checked. [2021-12-15 21:59:29,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:29,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425210240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:29,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:29,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:29,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154037038] [2021-12-15 21:59:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:29,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:29,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:29,521 INFO L87 Difference]: Start difference. First operand 8392 states and 10945 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:29,665 INFO L93 Difference]: Finished difference Result 17751 states and 23191 transitions. [2021-12-15 21:59:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:29,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 586 [2021-12-15 21:59:29,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:29,684 INFO L225 Difference]: With dead ends: 17751 [2021-12-15 21:59:29,684 INFO L226 Difference]: Without dead ends: 9380 [2021-12-15 21:59:29,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:29,696 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 146 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:29,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 583 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9380 states. [2021-12-15 21:59:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9380 to 9380. [2021-12-15 21:59:29,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9380 states, 9379 states have (on average 1.3040835910011728) internal successors, (12231), 9379 states have internal predecessors, (12231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9380 states to 9380 states and 12231 transitions. [2021-12-15 21:59:29,864 INFO L78 Accepts]: Start accepts. Automaton has 9380 states and 12231 transitions. Word has length 586 [2021-12-15 21:59:29,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:29,865 INFO L470 AbstractCegarLoop]: Abstraction has 9380 states and 12231 transitions. [2021-12-15 21:59:29,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9380 states and 12231 transitions. [2021-12-15 21:59:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2021-12-15 21:59:29,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:29,885 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:29,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:30,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-15 21:59:30,107 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:30,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1741653189, now seen corresponding path program 1 times [2021-12-15 21:59:30,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:30,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189504481] [2021-12-15 21:59:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:30,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 1996 proven. 26 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2021-12-15 21:59:30,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:30,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189504481] [2021-12-15 21:59:30,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189504481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:30,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463830873] [2021-12-15 21:59:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:30,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:30,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:30,198 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) [2021-12-15 21:59:30,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 21:59:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:30,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 21:59:30,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 1212 proven. 0 refuted. 0 times theorem prover too weak. 2350 trivial. 0 not checked. [2021-12-15 21:59:31,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:31,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463830873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:31,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:31,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:31,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976343062] [2021-12-15 21:59:31,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:31,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:31,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:31,140 INFO L87 Difference]: Start difference. First operand 9380 states and 12231 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:31,262 INFO L93 Difference]: Finished difference Result 18845 states and 24569 transitions. [2021-12-15 21:59:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 587 [2021-12-15 21:59:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:31,281 INFO L225 Difference]: With dead ends: 18845 [2021-12-15 21:59:31,282 INFO L226 Difference]: Without dead ends: 9486 [2021-12-15 21:59:31,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:31,294 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 18 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:31,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 468 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 21:59:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9486 states. [2021-12-15 21:59:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9486 to 9486. [2021-12-15 21:59:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9486 states, 9485 states have (on average 1.302161307327359) internal successors, (12351), 9485 states have internal predecessors, (12351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9486 states to 9486 states and 12351 transitions. [2021-12-15 21:59:31,445 INFO L78 Accepts]: Start accepts. Automaton has 9486 states and 12351 transitions. Word has length 587 [2021-12-15 21:59:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:31,446 INFO L470 AbstractCegarLoop]: Abstraction has 9486 states and 12351 transitions. [2021-12-15 21:59:31,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9486 states and 12351 transitions. [2021-12-15 21:59:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2021-12-15 21:59:31,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:31,460 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:31,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:31,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-15 21:59:31,676 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:31,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1162060469, now seen corresponding path program 1 times [2021-12-15 21:59:31,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:31,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061909749] [2021-12-15 21:59:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:31,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 1996 proven. 26 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2021-12-15 21:59:31,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:31,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061909749] [2021-12-15 21:59:31,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061909749] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:31,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743443866] [2021-12-15 21:59:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:31,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:31,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:31,797 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) [2021-12-15 21:59:31,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 21:59:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:31,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 21:59:31,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3562 backedges. 1521 proven. 0 refuted. 0 times theorem prover too weak. 2041 trivial. 0 not checked. [2021-12-15 21:59:32,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:32,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743443866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:32,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:32,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:32,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564869156] [2021-12-15 21:59:32,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:32,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:32,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:32,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:32,621 INFO L87 Difference]: Start difference. First operand 9486 states and 12351 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:32,793 INFO L93 Difference]: Finished difference Result 19896 states and 25952 transitions. [2021-12-15 21:59:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:32,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 588 [2021-12-15 21:59:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:32,812 INFO L225 Difference]: With dead ends: 19896 [2021-12-15 21:59:32,813 INFO L226 Difference]: Without dead ends: 10431 [2021-12-15 21:59:32,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:32,823 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 149 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:32,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 585 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-12-15 21:59:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10431. [2021-12-15 21:59:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 10430 states have (on average 1.3025886864813039) internal successors, (13586), 10430 states have internal predecessors, (13586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 13586 transitions. [2021-12-15 21:59:33,002 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 13586 transitions. Word has length 588 [2021-12-15 21:59:33,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:33,003 INFO L470 AbstractCegarLoop]: Abstraction has 10431 states and 13586 transitions. [2021-12-15 21:59:33,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 13586 transitions. [2021-12-15 21:59:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2021-12-15 21:59:33,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:33,019 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 20, 20, 19, 19, 18, 18, 17, 17, 17, 17, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:33,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:33,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-15 21:59:33,248 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:33,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:33,248 INFO L85 PathProgramCache]: Analyzing trace with hash -287836341, now seen corresponding path program 1 times [2021-12-15 21:59:33,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:33,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109640867] [2021-12-15 21:59:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:33,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 3420 proven. 26 refuted. 0 times theorem prover too weak. 2232 trivial. 0 not checked. [2021-12-15 21:59:33,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:33,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109640867] [2021-12-15 21:59:33,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109640867] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:33,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915208909] [2021-12-15 21:59:33,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:33,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:33,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:33,366 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) [2021-12-15 21:59:33,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 21:59:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:33,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 21:59:33,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1047 proven. 0 refuted. 0 times theorem prover too weak. 4631 trivial. 0 not checked. [2021-12-15 21:59:34,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:34,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915208909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:34,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:34,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:34,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300925290] [2021-12-15 21:59:34,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:34,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:34,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:34,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:34,409 INFO L87 Difference]: Start difference. First operand 10431 states and 13586 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:34,575 INFO L93 Difference]: Finished difference Result 21878 states and 28532 transitions. [2021-12-15 21:59:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:34,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 740 [2021-12-15 21:59:34,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:34,601 INFO L225 Difference]: With dead ends: 21878 [2021-12-15 21:59:34,601 INFO L226 Difference]: Without dead ends: 11468 [2021-12-15 21:59:34,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:34,613 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 161 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:34,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 364 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11468 states. [2021-12-15 21:59:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11468 to 11468. [2021-12-15 21:59:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11468 states, 11467 states have (on average 1.3050492718234934) internal successors, (14965), 11467 states have internal predecessors, (14965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11468 states to 11468 states and 14965 transitions. [2021-12-15 21:59:34,797 INFO L78 Accepts]: Start accepts. Automaton has 11468 states and 14965 transitions. Word has length 740 [2021-12-15 21:59:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:34,799 INFO L470 AbstractCegarLoop]: Abstraction has 11468 states and 14965 transitions. [2021-12-15 21:59:34,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 11468 states and 14965 transitions. [2021-12-15 21:59:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2021-12-15 21:59:34,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:34,817 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 21, 21, 20, 20, 19, 19, 18, 18, 18, 18, 14, 13, 13, 12, 12, 11, 11, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:34,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:35,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:35,043 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:35,044 INFO L85 PathProgramCache]: Analyzing trace with hash -67416172, now seen corresponding path program 1 times [2021-12-15 21:59:35,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:35,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924056667] [2021-12-15 21:59:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:35,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6309 backedges. 2395 proven. 18 refuted. 0 times theorem prover too weak. 3896 trivial. 0 not checked. [2021-12-15 21:59:35,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:35,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924056667] [2021-12-15 21:59:35,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924056667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:35,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427321989] [2021-12-15 21:59:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:35,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:35,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:35,154 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) [2021-12-15 21:59:35,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 21:59:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:35,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 21:59:35,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6309 backedges. 1221 proven. 0 refuted. 0 times theorem prover too weak. 5088 trivial. 0 not checked. [2021-12-15 21:59:36,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:36,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427321989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:36,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:36,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:36,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439278363] [2021-12-15 21:59:36,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:36,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:36,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:36,170 INFO L87 Difference]: Start difference. First operand 11468 states and 14965 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:36,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:36,316 INFO L93 Difference]: Finished difference Result 23952 states and 31284 transitions. [2021-12-15 21:59:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:36,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 783 [2021-12-15 21:59:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:36,341 INFO L225 Difference]: With dead ends: 23952 [2021-12-15 21:59:36,342 INFO L226 Difference]: Without dead ends: 12505 [2021-12-15 21:59:36,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:36,353 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 165 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:36,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 366 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2021-12-15 21:59:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 12505. [2021-12-15 21:59:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12505 states, 12504 states have (on average 1.3067818298144593) internal successors, (16340), 12504 states have internal predecessors, (16340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12505 states to 12505 states and 16340 transitions. [2021-12-15 21:59:36,552 INFO L78 Accepts]: Start accepts. Automaton has 12505 states and 16340 transitions. Word has length 783 [2021-12-15 21:59:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:36,553 INFO L470 AbstractCegarLoop]: Abstraction has 12505 states and 16340 transitions. [2021-12-15 21:59:36,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12505 states and 16340 transitions. [2021-12-15 21:59:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2021-12-15 21:59:36,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:36,576 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 21, 21, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:36,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:36,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-15 21:59:36,802 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash 686733613, now seen corresponding path program 1 times [2021-12-15 21:59:36,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:36,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899785122] [2021-12-15 21:59:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:36,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8307 backedges. 2818 proven. 18 refuted. 0 times theorem prover too weak. 5471 trivial. 0 not checked. [2021-12-15 21:59:36,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:36,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899785122] [2021-12-15 21:59:36,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899785122] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:36,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958267906] [2021-12-15 21:59:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:36,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:36,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:36,927 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) [2021-12-15 21:59:36,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 21:59:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:37,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 21:59:37,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8307 backedges. 723 proven. 0 refuted. 0 times theorem prover too weak. 7584 trivial. 0 not checked. [2021-12-15 21:59:38,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 21:59:38,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958267906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 21:59:38,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 21:59:38,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 21:59:38,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50861127] [2021-12-15 21:59:38,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 21:59:38,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 21:59:38,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 21:59:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:38,106 INFO L87 Difference]: Start difference. First operand 12505 states and 16340 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:38,296 INFO L93 Difference]: Finished difference Result 26026 states and 34040 transitions. [2021-12-15 21:59:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 21:59:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 897 [2021-12-15 21:59:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:38,323 INFO L225 Difference]: With dead ends: 26026 [2021-12-15 21:59:38,323 INFO L226 Difference]: Without dead ends: 13542 [2021-12-15 21:59:38,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 21:59:38,338 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 164 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:38,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 363 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 21:59:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13542 states. [2021-12-15 21:59:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13542 to 13542. [2021-12-15 21:59:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13542 states, 13541 states have (on average 1.3086921202274573) internal successors, (17721), 13541 states have internal predecessors, (17721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13542 states to 13542 states and 17721 transitions. [2021-12-15 21:59:38,562 INFO L78 Accepts]: Start accepts. Automaton has 13542 states and 17721 transitions. Word has length 897 [2021-12-15 21:59:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:38,563 INFO L470 AbstractCegarLoop]: Abstraction has 13542 states and 17721 transitions. [2021-12-15 21:59:38,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 13542 states and 17721 transitions. [2021-12-15 21:59:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2021-12-15 21:59:38,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 21:59:38,587 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 21, 21, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:38,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 21:59:38,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:38,803 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 21:59:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 21:59:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash -593966993, now seen corresponding path program 1 times [2021-12-15 21:59:38,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 21:59:38,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920073806] [2021-12-15 21:59:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:38,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 21:59:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8307 backedges. 4844 proven. 26 refuted. 0 times theorem prover too weak. 3437 trivial. 0 not checked. [2021-12-15 21:59:38,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 21:59:38,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920073806] [2021-12-15 21:59:38,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920073806] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 21:59:38,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374980651] [2021-12-15 21:59:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 21:59:38,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 21:59:38,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 21:59:38,993 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) [2021-12-15 21:59:39,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 21:59:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 21:59:39,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 21:59:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 21:59:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8307 backedges. 4844 proven. 26 refuted. 0 times theorem prover too weak. 3437 trivial. 0 not checked. [2021-12-15 21:59:40,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 21:59:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8307 backedges. 4844 proven. 26 refuted. 0 times theorem prover too weak. 3437 trivial. 0 not checked. [2021-12-15 21:59:41,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374980651] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 21:59:41,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 21:59:41,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-12-15 21:59:41,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880550030] [2021-12-15 21:59:41,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 21:59:41,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 21:59:41,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 21:59:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 21:59:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-15 21:59:41,329 INFO L87 Difference]: Start difference. First operand 13542 states and 17721 transitions. Second operand has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 21:59:41,984 INFO L93 Difference]: Finished difference Result 24100 states and 31844 transitions. [2021-12-15 21:59:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 21:59:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 897 [2021-12-15 21:59:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 21:59:41,985 INFO L225 Difference]: With dead ends: 24100 [2021-12-15 21:59:41,985 INFO L226 Difference]: Without dead ends: 0 [2021-12-15 21:59:41,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1794 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-12-15 21:59:41,999 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 471 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 21:59:41,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1367 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 21:59:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-15 21:59:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-15 21:59:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-15 21:59:42,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 897 [2021-12-15 21:59:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 21:59:42,001 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 21:59:42,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 21:59:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-15 21:59:42,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-15 21:59:42,004 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 21:59:42,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-15 21:59:42,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-15 21:59:42,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-15 21:59:46,552 INFO L858 garLoopResultBuilder]: For program point L564(lines 564 567) no Hoare annotation was computed. [2021-12-15 21:59:46,553 INFO L854 garLoopResultBuilder]: At program point L201(lines 197 622) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8656))) (or (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0))) [2021-12-15 21:59:46,553 INFO L854 garLoopResultBuilder]: At program point L168(lines 164 633) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,553 INFO L854 garLoopResultBuilder]: At program point L135(lines 134 643) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,553 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 104) no Hoare annotation was computed. [2021-12-15 21:59:46,553 INFO L858 garLoopResultBuilder]: For program point L466(lines 466 478) no Hoare annotation was computed. [2021-12-15 21:59:46,553 INFO L858 garLoopResultBuilder]: For program point L367(lines 367 369) no Hoare annotation was computed. [2021-12-15 21:59:46,553 INFO L858 garLoopResultBuilder]: For program point L367-2(lines 364 373) no Hoare annotation was computed. [2021-12-15 21:59:46,554 INFO L858 garLoopResultBuilder]: For program point L335(lines 335 339) no Hoare annotation was computed. [2021-12-15 21:59:46,554 INFO L858 garLoopResultBuilder]: For program point L335-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,554 INFO L858 garLoopResultBuilder]: For program point L203(lines 203 620) no Hoare annotation was computed. [2021-12-15 21:59:46,554 INFO L858 garLoopResultBuilder]: For program point L170(lines 170 631) no Hoare annotation was computed. [2021-12-15 21:59:46,554 INFO L858 garLoopResultBuilder]: For program point L137(lines 137 642) no Hoare annotation was computed. [2021-12-15 21:59:46,554 INFO L854 garLoopResultBuilder]: At program point L402(lines 393 428) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,554 INFO L858 garLoopResultBuilder]: For program point L270(lines 270 272) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L237(lines 237 248) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L237-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L601(lines 601 607) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L601-1(lines 601 607) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L304(lines 304 308) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L304-2(lines 304 308) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 472) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L470-2(lines 468 478) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L239(lines 239 242) no Hoare annotation was computed. [2021-12-15 21:59:46,555 INFO L858 garLoopResultBuilder]: For program point L206(lines 206 619) no Hoare annotation was computed. [2021-12-15 21:59:46,556 INFO L858 garLoopResultBuilder]: For program point L173(lines 173 630) no Hoare annotation was computed. [2021-12-15 21:59:46,556 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 641) no Hoare annotation was computed. [2021-12-15 21:59:46,556 INFO L858 garLoopResultBuilder]: For program point L438(lines 438 440) no Hoare annotation was computed. [2021-12-15 21:59:46,556 INFO L858 garLoopResultBuilder]: For program point L405(lines 405 426) no Hoare annotation was computed. [2021-12-15 21:59:46,556 INFO L854 garLoopResultBuilder]: At program point L207(lines 203 620) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672)) (.cse1 (<= 8656 |ULTIMATE.start_ssl3_accept_~s__state~0#1|))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 12) (= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 0)) (and .cse0 .cse1 (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5)) (and .cse0 .cse1 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)) (and .cse0 .cse1 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9)))) [2021-12-15 21:59:46,556 INFO L854 garLoopResultBuilder]: At program point L174(lines 170 631) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,556 INFO L861 garLoopResultBuilder]: At program point L670(lines 109 671) the Hoare annotation is: true [2021-12-15 21:59:46,556 INFO L858 garLoopResultBuilder]: For program point L604(lines 604 606) no Hoare annotation was computed. [2021-12-15 21:59:46,557 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 412) no Hoare annotation was computed. [2021-12-15 21:59:46,557 INFO L858 garLoopResultBuilder]: For program point L572(lines 572 586) no Hoare annotation was computed. [2021-12-15 21:59:46,557 INFO L858 garLoopResultBuilder]: For program point L539(lines 539 542) no Hoare annotation was computed. [2021-12-15 21:59:46,557 INFO L858 garLoopResultBuilder]: For program point L209(lines 209 618) no Hoare annotation was computed. [2021-12-15 21:59:46,557 INFO L858 garLoopResultBuilder]: For program point L176(lines 176 629) no Hoare annotation was computed. [2021-12-15 21:59:46,557 INFO L858 garLoopResultBuilder]: For program point L143(lines 143 640) no Hoare annotation was computed. [2021-12-15 21:59:46,557 INFO L854 garLoopResultBuilder]: At program point L110-2(lines 110 669) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 12)) (.cse2 (= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 3)) (.cse1 (= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 0)) (.cse3 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 3))) (or (and (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 8656 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) .cse0 .cse1) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 8) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8608)) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8448) .cse2 .cse1) (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 7) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8592)) (and .cse3 .cse0 .cse2 .cse1) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6) (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 10) .cse3))) [2021-12-15 21:59:46,558 INFO L858 garLoopResultBuilder]: For program point L507(lines 507 525) no Hoare annotation was computed. [2021-12-15 21:59:46,559 INFO L858 garLoopResultBuilder]: For program point L243(lines 243 246) no Hoare annotation was computed. [2021-12-15 21:59:46,559 INFO L854 garLoopResultBuilder]: At program point L177(lines 176 629) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8448))) (or (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9)) (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 12) .cse0 (= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 3) (= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 0)) (and .cse0 (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5)) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,560 INFO L854 garLoopResultBuilder]: At program point L144(lines 137 642) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L575(lines 575 585) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L344(lines 344 385) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 617) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 628) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 639) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L113(lines 113 650) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L675(lines 675 677) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L675-2(lines 675 677) no Hoare annotation was computed. [2021-12-15 21:59:46,560 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 524) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L854 garLoopResultBuilder]: At program point L213(lines 209 618) the Hoare annotation is: (let ((.cse0 (<= 8656 |ULTIMATE.start_ssl3_accept_~s__state~0#1|))) (or (and .cse0 (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 12) (= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 0)) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)) (and .cse0 (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5)) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9)))) [2021-12-15 21:59:46,561 INFO L854 garLoopResultBuilder]: At program point L114(lines 113 650) the Hoare annotation is: (let ((.cse0 (<= 8656 |ULTIMATE.start_ssl3_accept_~s__state~0#1|))) (or (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)) (and .cse0 (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5)) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9)))) [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L544(lines 544 558) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 584) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L446-1(lines 446 454) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 384) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L347-1(lines 347 384) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L215(lines 215 616) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L182(lines 182 627) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 638) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 649) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L513(lines 513 523) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L854 garLoopResultBuilder]: At program point L414(lines 405 426) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L348(lines 348 381) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L315(lines 315 325) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L858 garLoopResultBuilder]: For program point L315-2(lines 315 325) no Hoare annotation was computed. [2021-12-15 21:59:46,561 INFO L861 garLoopResultBuilder]: At program point L216(lines 215 616) the Hoare annotation is: true [2021-12-15 21:59:46,561 INFO L854 garLoopResultBuilder]: At program point L183(lines 179 628) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,562 INFO L854 garLoopResultBuilder]: At program point L150(lines 146 639) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L547(lines 547 557) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L861 garLoopResultBuilder]: At program point L680(lines 22 682) the Hoare annotation is: true [2021-12-15 21:59:46,562 INFO L854 garLoopResultBuilder]: At program point L614(lines 110 669) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 12)) (.cse2 (= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 3)) (.cse1 (= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 0)) (.cse3 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 3))) (or (and (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 8656 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) .cse0 .cse1) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 8) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8608)) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8448) .cse2 .cse1) (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 7) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8592)) (and .cse3 .cse0 .cse2 .cse1) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6) (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 10) .cse3))) [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L581(lines 581 583) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L581-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L449(lines 449 452) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L861 garLoopResultBuilder]: At program point L218(lines 217 616) the Hoare annotation is: true [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 626) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L152(lines 152 637) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L119(lines 119 648) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 522) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L483(lines 483 485) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L516-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 419) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L483-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L417-2(lines 413 426) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L285(lines 285 287) no Hoare annotation was computed. [2021-12-15 21:59:46,562 INFO L858 garLoopResultBuilder]: For program point L285-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L550(lines 550 556) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 321) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L319-2(lines 317 325) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L353(lines 353 379) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L254(lines 254 264) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 625) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L155(lines 155 636) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L122(lines 122 647) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L651(lines 651 667) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L519(lines 519 521) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L858 garLoopResultBuilder]: For program point L255(lines 255 258) no Hoare annotation was computed. [2021-12-15 21:59:46,563 INFO L854 garLoopResultBuilder]: At program point L222(lines 116 649) the Hoare annotation is: (or (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)) [2021-12-15 21:59:46,564 INFO L854 garLoopResultBuilder]: At program point L189(lines 185 626) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 7) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,564 INFO L854 garLoopResultBuilder]: At program point L156(lines 152 637) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,564 INFO L858 garLoopResultBuilder]: For program point L652(lines 652 666) no Hoare annotation was computed. [2021-12-15 21:59:46,564 INFO L858 garLoopResultBuilder]: For program point L553(lines 553 555) no Hoare annotation was computed. [2021-12-15 21:59:46,564 INFO L854 garLoopResultBuilder]: At program point L520(lines 83 681) the Hoare annotation is: false [2021-12-15 21:59:46,564 INFO L858 garLoopResultBuilder]: For program point L553-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,564 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-15 21:59:46,564 INFO L858 garLoopResultBuilder]: For program point L653(lines 653 658) no Hoare annotation was computed. [2021-12-15 21:59:46,565 INFO L858 garLoopResultBuilder]: For program point L653-2(lines 652 666) no Hoare annotation was computed. [2021-12-15 21:59:46,565 INFO L858 garLoopResultBuilder]: For program point L356(lines 356 360) no Hoare annotation was computed. [2021-12-15 21:59:46,565 INFO L858 garLoopResultBuilder]: For program point L356-2(lines 356 360) no Hoare annotation was computed. [2021-12-15 21:59:46,565 INFO L858 garLoopResultBuilder]: For program point L191(lines 191 624) no Hoare annotation was computed. [2021-12-15 21:59:46,565 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 635) no Hoare annotation was computed. [2021-12-15 21:59:46,565 INFO L858 garLoopResultBuilder]: For program point L125(lines 125 646) no Hoare annotation was computed. [2021-12-15 21:59:46,565 INFO L858 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-12-15 21:59:46,565 INFO L858 garLoopResultBuilder]: For program point L655(lines 655 657) no Hoare annotation was computed. [2021-12-15 21:59:46,566 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-15 21:59:46,566 INFO L858 garLoopResultBuilder]: For program point L227(lines 227 229) no Hoare annotation was computed. [2021-12-15 21:59:46,566 INFO L858 garLoopResultBuilder]: For program point L194(lines 194 623) no Hoare annotation was computed. [2021-12-15 21:59:46,566 INFO L858 garLoopResultBuilder]: For program point L161(lines 161 634) no Hoare annotation was computed. [2021-12-15 21:59:46,566 INFO L858 garLoopResultBuilder]: For program point L227-2(lines 227 229) no Hoare annotation was computed. [2021-12-15 21:59:46,566 INFO L858 garLoopResultBuilder]: For program point L128(lines 128 645) no Hoare annotation was computed. [2021-12-15 21:59:46,566 INFO L858 garLoopResultBuilder]: For program point L591(lines 591 595) no Hoare annotation was computed. [2021-12-15 21:59:46,566 INFO L858 garLoopResultBuilder]: For program point L591-2(lines 591 595) no Hoare annotation was computed. [2021-12-15 21:59:46,567 INFO L858 garLoopResultBuilder]: For program point L393(lines 393 428) no Hoare annotation was computed. [2021-12-15 21:59:46,567 INFO L854 garLoopResultBuilder]: At program point L195(lines 191 624) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 8) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,567 INFO L854 garLoopResultBuilder]: At program point L162(lines 158 635) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,567 INFO L858 garLoopResultBuilder]: For program point L96(lines 96 98) no Hoare annotation was computed. [2021-12-15 21:59:46,567 INFO L858 garLoopResultBuilder]: For program point L96-2(lines 93 99) no Hoare annotation was computed. [2021-12-15 21:59:46,567 INFO L858 garLoopResultBuilder]: For program point L460(lines 460 462) no Hoare annotation was computed. [2021-12-15 21:59:46,567 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 400) no Hoare annotation was computed. [2021-12-15 21:59:46,568 INFO L858 garLoopResultBuilder]: For program point L460-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,568 INFO L861 garLoopResultBuilder]: At program point L692(lines 683 694) the Hoare annotation is: true [2021-12-15 21:59:46,568 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 622) no Hoare annotation was computed. [2021-12-15 21:59:46,568 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 633) no Hoare annotation was computed. [2021-12-15 21:59:46,568 INFO L858 garLoopResultBuilder]: For program point L131(lines 131 644) no Hoare annotation was computed. [2021-12-15 21:59:46,568 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-15 21:59:46,568 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 679) no Hoare annotation was computed. [2021-12-15 21:59:46,568 INFO L858 garLoopResultBuilder]: For program point L660(lines 660 664) no Hoare annotation was computed. [2021-12-15 21:59:46,569 INFO L858 garLoopResultBuilder]: For program point L495(lines 495 497) no Hoare annotation was computed. [2021-12-15 21:59:46,569 INFO L858 garLoopResultBuilder]: For program point L495-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,569 INFO L854 garLoopResultBuilder]: At program point L132(lines 128 645) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,569 INFO L858 garLoopResultBuilder]: For program point L529(lines 529 533) no Hoare annotation was computed. [2021-12-15 21:59:46,569 INFO L858 garLoopResultBuilder]: For program point L529-2(lines 529 533) no Hoare annotation was computed. [2021-12-15 21:59:46,569 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2021-12-15 21:59:46,569 INFO L858 garLoopResultBuilder]: For program point L298(lines 298 300) no Hoare annotation was computed. [2021-12-15 21:59:46,569 INFO L858 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-12-15 21:59:46,570 INFO L858 garLoopResultBuilder]: For program point L298-2(lines 219 613) no Hoare annotation was computed. [2021-12-15 21:59:46,570 INFO L854 garLoopResultBuilder]: At program point L365(lines 341 386) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640))) (or (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 5) .cse0) (and (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 9) .cse0) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 6)))) [2021-12-15 21:59:46,570 INFO L858 garLoopResultBuilder]: For program point L200(lines 200 621) no Hoare annotation was computed. [2021-12-15 21:59:46,570 INFO L858 garLoopResultBuilder]: For program point L167(lines 167 632) no Hoare annotation was computed. [2021-12-15 21:59:46,570 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 643) no Hoare annotation was computed. [2021-12-15 21:59:46,570 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 105) no Hoare annotation was computed. [2021-12-15 21:59:46,570 INFO L858 garLoopResultBuilder]: For program point L101-1(lines 83 681) no Hoare annotation was computed. [2021-12-15 21:59:46,576 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 21:59:46,577 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 21:59:46,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:59:46 BoogieIcfgContainer [2021-12-15 21:59:46,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 21:59:46,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 21:59:46,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 21:59:46,598 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 21:59:46,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:59:18" (3/4) ... [2021-12-15 21:59:46,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-15 21:59:46,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-15 21:59:46,619 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-15 21:59:46,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-15 21:59:46,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-15 21:59:46,715 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 21:59:46,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 21:59:46,716 INFO L158 Benchmark]: Toolchain (without parser) took 29205.76ms. Allocated memory was 92.3MB in the beginning and 805.3MB in the end (delta: 713.0MB). Free memory was 71.7MB in the beginning and 562.9MB in the end (delta: -491.2MB). Peak memory consumption was 222.0MB. Max. memory is 16.1GB. [2021-12-15 21:59:46,716 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 71.3MB. Free memory is still 43.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 21:59:46,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.21ms. Allocated memory is still 92.3MB. Free memory was 71.5MB in the beginning and 56.1MB in the end (delta: 15.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 21:59:46,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.55ms. Allocated memory is still 92.3MB. Free memory was 56.1MB in the beginning and 52.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 21:59:46,717 INFO L158 Benchmark]: Boogie Preprocessor took 43.36ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 21:59:46,718 INFO L158 Benchmark]: RCFGBuilder took 623.69ms. Allocated memory is still 92.3MB. Free memory was 50.8MB in the beginning and 43.1MB in the end (delta: 7.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2021-12-15 21:59:46,718 INFO L158 Benchmark]: TraceAbstraction took 28051.56ms. Allocated memory was 92.3MB in the beginning and 805.3MB in the end (delta: 713.0MB). Free memory was 42.7MB in the beginning and 573.4MB in the end (delta: -530.7MB). Peak memory consumption was 518.3MB. Max. memory is 16.1GB. [2021-12-15 21:59:46,718 INFO L158 Benchmark]: Witness Printer took 117.91ms. Allocated memory is still 805.3MB. Free memory was 573.4MB in the beginning and 562.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 21:59:46,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 71.3MB. Free memory is still 43.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.21ms. Allocated memory is still 92.3MB. Free memory was 71.5MB in the beginning and 56.1MB in the end (delta: 15.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.55ms. Allocated memory is still 92.3MB. Free memory was 56.1MB in the beginning and 52.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.36ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.69ms. Allocated memory is still 92.3MB. Free memory was 50.8MB in the beginning and 43.1MB in the end (delta: 7.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * TraceAbstraction took 28051.56ms. Allocated memory was 92.3MB in the beginning and 805.3MB in the end (delta: 713.0MB). Free memory was 42.7MB in the beginning and 573.4MB in the end (delta: -530.7MB). Peak memory consumption was 518.3MB. Max. memory is 16.1GB. * Witness Printer took 117.91ms. Allocated memory is still 805.3MB. Free memory was 573.4MB in the beginning and 562.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 679]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 158 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.0s, OverallIterations: 33, TraceHistogramMax: 26, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3375 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3375 mSDsluCounter, 15031 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6148 mSDsCounter, 781 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3306 IncrementalHoareTripleChecker+Invalid, 4087 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 781 mSolverCounterUnsat, 8883 mSDtfsCounter, 3306 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7184 GetRequests, 7124 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13542occurred in iteration=32, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 33 MinimizatonAttempts, 529 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 950 NumberOfFragments, 633 HoareAnnotationTreeSize, 28 FomulaSimplifications, 35969 FormulaSimplificationTreeSizeReduction, 3.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 4253 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 16498 NumberOfCodeBlocks, 16498 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 17351 ConstructedInterpolants, 0 QuantifiedInterpolants, 21203 SizeOfPredicates, 1 NumberOfNonLiveVariables, 9606 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 44 InterpolantComputations, 32 PerfectInterpolantSequences, 104984/105272 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 683]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 215]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: ((((((((((s__state <= 8672 && 8656 <= s__state) && blastFlag <= 12) && s__hit == 0) || blastFlag == 9) || (blastFlag == 8 && s__state == 8608)) || (((blastFlag <= 12 && s__state == 8448) && s__s3__tmp__next_state___0 == 3) && s__hit == 0)) || blastFlag <= 5) || (blastFlag == 7 && s__state == 8592)) || (((s__state == 3 && blastFlag <= 12) && s__s3__tmp__next_state___0 == 3) && s__hit == 0)) || blastFlag == 6) || (blastFlag <= 10 && s__state == 3) - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: (((((s__state <= 8672 && 8656 <= s__state) && blastFlag <= 12) && s__hit == 0) || ((s__state <= 8672 && 8656 <= s__state) && blastFlag <= 5)) || ((s__state <= 8672 && 8656 <= s__state) && blastFlag == 6)) || ((s__state <= 8672 && 8656 <= s__state) && blastFlag == 9) - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: (((blastFlag <= 5 && s__state < 8640) || (blastFlag == 8 && s__state < 8640)) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 83]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 217]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: ((((((((((s__state <= 8672 && 8656 <= s__state) && blastFlag <= 12) && s__hit == 0) || blastFlag == 9) || (blastFlag == 8 && s__state == 8608)) || (((blastFlag <= 12 && s__state == 8448) && s__s3__tmp__next_state___0 == 3) && s__hit == 0)) || blastFlag <= 5) || (blastFlag == 7 && s__state == 8592)) || (((s__state == 3 && blastFlag <= 12) && s__s3__tmp__next_state___0 == 3) && s__hit == 0)) || blastFlag == 6) || (blastFlag <= 10 && s__state == 3) - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: (blastFlag == 9 || blastFlag <= 5) || blastFlag == 6 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: ((8656 <= s__state && blastFlag == 6) || (8656 <= s__state && blastFlag <= 5)) || (8656 <= s__state && blastFlag == 9) - InvariantResult [Line: 341]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 393]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((s__state == 8448 && blastFlag == 9) || (((blastFlag <= 12 && s__state == 8448) && s__s3__tmp__next_state___0 == 3) && s__hit == 0)) || (s__state == 8448 && blastFlag <= 5)) || (s__state == 8448 && blastFlag == 6) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: (((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (blastFlag == 7 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 405]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: ((((8656 <= s__state && blastFlag <= 12) && s__hit == 0) || (8656 <= s__state && blastFlag == 6)) || (8656 <= s__state && blastFlag <= 5)) || (8656 <= s__state && blastFlag == 9) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: ((s__state <= 8656 && blastFlag == 6) || (blastFlag == 9 && s__state <= 8656)) || (blastFlag <= 5 && s__state <= 8656) - InvariantResult [Line: 158]: Loop Invariant Derived loop invariant: ((blastFlag <= 5 && s__state < 8640) || (blastFlag == 9 && s__state < 8640)) || (s__state < 8640 && blastFlag == 6) RESULT: Ultimate proved your program to be correct! [2021-12-15 21:59:46,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE