/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:18:16,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:18:16,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:18:16,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:18:16,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:18:16,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:18:16,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:18:16,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:18:16,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:18:16,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:18:16,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:18:16,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:18:16,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:18:16,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:18:16,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:18:16,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:18:16,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:18:16,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:18:16,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:18:16,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:18:16,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:18:16,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:18:16,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:18:16,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:18:16,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:18:16,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:18:16,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:18:16,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:18:16,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:18:16,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:18:16,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:18:16,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:18:16,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:18:16,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:18:16,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:18:16,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:18:16,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:18:16,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:18:16,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:18:16,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:18:16,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:18:16,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:18:16,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:18:16,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:18:16,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:18:16,283 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:18:16,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:18:16,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:18:16,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:18:16,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:18:16,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:18:16,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:18:16,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:18:16,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:18:16,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:18:16,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:18:16,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:18:16,289 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:18:16,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:18:16,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:18:16,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:18:16,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:18:16,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:18:16,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:18:16,292 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:18:16,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:18:16,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:18:16,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:18:16,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:18:16,592 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:18:16,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-07-17 13:18:16,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d9d3308/0e3ab40ead584cffb6f176e158db6915/FLAG9923a1a3b [2020-07-17 13:18:17,251 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:18:17,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-07-17 13:18:17,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d9d3308/0e3ab40ead584cffb6f176e158db6915/FLAG9923a1a3b [2020-07-17 13:18:17,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d9d3308/0e3ab40ead584cffb6f176e158db6915 [2020-07-17 13:18:17,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:18:17,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:18:17,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:18:17,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:18:17,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:18:17,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:18:17" (1/1) ... [2020-07-17 13:18:17,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a4ff6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:17, skipping insertion in model container [2020-07-17 13:18:17,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:18:17" (1/1) ... [2020-07-17 13:18:17,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:18:17,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:18:18,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:18:18,021 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:18:18,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:18:18,241 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:18:18,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18 WrapperNode [2020-07-17 13:18:18,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:18:18,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:18:18,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:18:18,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:18:18,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (1/1) ... [2020-07-17 13:18:18,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (1/1) ... [2020-07-17 13:18:18,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (1/1) ... [2020-07-17 13:18:18,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (1/1) ... [2020-07-17 13:18:18,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (1/1) ... [2020-07-17 13:18:18,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (1/1) ... [2020-07-17 13:18:18,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (1/1) ... [2020-07-17 13:18:18,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:18:18,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:18:18,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:18:18,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:18:18,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:18:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:18:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:18:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-07-17 13:18:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:18:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:18:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-17 13:18:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:18:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-17 13:18:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-07-17 13:18:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:18:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:18:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:18:18,617 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-17 13:18:19,272 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-07-17 13:18:19,273 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-07-17 13:18:19,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:18:19,289 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 13:18:19,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:18:19 BoogieIcfgContainer [2020-07-17 13:18:19,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:18:19,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:18:19,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:18:19,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:18:19,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:18:17" (1/3) ... [2020-07-17 13:18:19,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287c8008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:18:19, skipping insertion in model container [2020-07-17 13:18:19,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:18:18" (2/3) ... [2020-07-17 13:18:19,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287c8008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:18:19, skipping insertion in model container [2020-07-17 13:18:19,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:18:19" (3/3) ... [2020-07-17 13:18:19,307 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2020-07-17 13:18:19,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:18:19,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:18:19,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:18:19,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:18:19,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:18:19,361 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:18:19,361 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:18:19,361 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:18:19,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:18:19,362 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:18:19,362 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:18:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-07-17 13:18:19,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-17 13:18:19,414 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:19,415 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:19,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash -51904500, now seen corresponding path program 1 times [2020-07-17 13:18:19,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:19,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931421615] [2020-07-17 13:18:19,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:19,999 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:20,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931421615] [2020-07-17 13:18:20,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:20,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:18:20,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949451062] [2020-07-17 13:18:20,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:18:20,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:20,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:18:20,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:18:20,030 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 6 states. [2020-07-17 13:18:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:20,490 INFO L93 Difference]: Finished difference Result 765 states and 1012 transitions. [2020-07-17 13:18:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:18:20,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-07-17 13:18:20,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:20,513 INFO L225 Difference]: With dead ends: 765 [2020-07-17 13:18:20,513 INFO L226 Difference]: Without dead ends: 438 [2020-07-17 13:18:20,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:18:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-07-17 13:18:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 425. [2020-07-17 13:18:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-17 13:18:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 503 transitions. [2020-07-17 13:18:20,659 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 503 transitions. Word has length 181 [2020-07-17 13:18:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:20,663 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 503 transitions. [2020-07-17 13:18:20,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:18:20,664 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2020-07-17 13:18:20,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-17 13:18:20,678 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:20,679 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:20,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:18:20,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:20,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1773900517, now seen corresponding path program 1 times [2020-07-17 13:18:20,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:20,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742332196] [2020-07-17 13:18:20,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:20,898 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:20,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742332196] [2020-07-17 13:18:20,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:20,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:20,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106936153] [2020-07-17 13:18:20,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:20,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:20,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:20,902 INFO L87 Difference]: Start difference. First operand 425 states and 503 transitions. Second operand 3 states. [2020-07-17 13:18:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:20,991 INFO L93 Difference]: Finished difference Result 977 states and 1204 transitions. [2020-07-17 13:18:20,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:20,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-07-17 13:18:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:21,000 INFO L225 Difference]: With dead ends: 977 [2020-07-17 13:18:21,001 INFO L226 Difference]: Without dead ends: 696 [2020-07-17 13:18:21,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-07-17 13:18:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-07-17 13:18:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-07-17 13:18:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 844 transitions. [2020-07-17 13:18:21,086 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 844 transitions. Word has length 203 [2020-07-17 13:18:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:21,087 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 844 transitions. [2020-07-17 13:18:21,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 844 transitions. [2020-07-17 13:18:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-17 13:18:21,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:21,092 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:21,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:18:21,092 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:21,093 INFO L82 PathProgramCache]: Analyzing trace with hash -144089876, now seen corresponding path program 1 times [2020-07-17 13:18:21,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:21,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688712686] [2020-07-17 13:18:21,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:21,229 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:21,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688712686] [2020-07-17 13:18:21,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:21,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:21,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838293863] [2020-07-17 13:18:21,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:21,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:21,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:21,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:21,232 INFO L87 Difference]: Start difference. First operand 696 states and 844 transitions. Second operand 3 states. [2020-07-17 13:18:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:21,501 INFO L93 Difference]: Finished difference Result 1023 states and 1266 transitions. [2020-07-17 13:18:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:21,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-07-17 13:18:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:21,507 INFO L225 Difference]: With dead ends: 1023 [2020-07-17 13:18:21,507 INFO L226 Difference]: Without dead ends: 742 [2020-07-17 13:18:21,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:21,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-07-17 13:18:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 720. [2020-07-17 13:18:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-07-17 13:18:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 873 transitions. [2020-07-17 13:18:21,578 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 873 transitions. Word has length 204 [2020-07-17 13:18:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:21,579 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 873 transitions. [2020-07-17 13:18:21,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 873 transitions. [2020-07-17 13:18:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-07-17 13:18:21,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:21,587 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:21,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:18:21,588 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:21,589 INFO L82 PathProgramCache]: Analyzing trace with hash -764991549, now seen corresponding path program 1 times [2020-07-17 13:18:21,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:21,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590064147] [2020-07-17 13:18:21,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:21,799 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:21,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590064147] [2020-07-17 13:18:21,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:21,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:21,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053663644] [2020-07-17 13:18:21,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:21,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:21,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:21,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:21,806 INFO L87 Difference]: Start difference. First operand 720 states and 873 transitions. Second operand 3 states. [2020-07-17 13:18:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:21,990 INFO L93 Difference]: Finished difference Result 1867 states and 2315 transitions. [2020-07-17 13:18:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:21,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-07-17 13:18:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:22,002 INFO L225 Difference]: With dead ends: 1867 [2020-07-17 13:18:22,003 INFO L226 Difference]: Without dead ends: 1291 [2020-07-17 13:18:22,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-07-17 13:18:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1289. [2020-07-17 13:18:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2020-07-17 13:18:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1580 transitions. [2020-07-17 13:18:22,159 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1580 transitions. Word has length 211 [2020-07-17 13:18:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:22,160 INFO L479 AbstractCegarLoop]: Abstraction has 1289 states and 1580 transitions. [2020-07-17 13:18:22,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1580 transitions. [2020-07-17 13:18:22,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-07-17 13:18:22,169 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:22,170 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:22,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:18:22,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:22,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1086176952, now seen corresponding path program 1 times [2020-07-17 13:18:22,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:22,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320554439] [2020-07-17 13:18:22,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:22,383 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:22,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320554439] [2020-07-17 13:18:22,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:22,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:22,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209861254] [2020-07-17 13:18:22,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:22,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:22,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:22,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:22,386 INFO L87 Difference]: Start difference. First operand 1289 states and 1580 transitions. Second operand 3 states. [2020-07-17 13:18:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:22,564 INFO L93 Difference]: Finished difference Result 2483 states and 3077 transitions. [2020-07-17 13:18:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:22,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-07-17 13:18:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:22,577 INFO L225 Difference]: With dead ends: 2483 [2020-07-17 13:18:22,577 INFO L226 Difference]: Without dead ends: 1881 [2020-07-17 13:18:22,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-07-17 13:18:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1881. [2020-07-17 13:18:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-07-17 13:18:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2318 transitions. [2020-07-17 13:18:22,717 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2318 transitions. Word has length 211 [2020-07-17 13:18:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:22,718 INFO L479 AbstractCegarLoop]: Abstraction has 1881 states and 2318 transitions. [2020-07-17 13:18:22,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2318 transitions. [2020-07-17 13:18:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-07-17 13:18:22,725 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:22,725 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:22,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:18:22,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:22,727 INFO L82 PathProgramCache]: Analyzing trace with hash 955931285, now seen corresponding path program 1 times [2020-07-17 13:18:22,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:22,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784425880] [2020-07-17 13:18:22,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:22,850 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:22,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784425880] [2020-07-17 13:18:22,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:22,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:22,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212586027] [2020-07-17 13:18:22,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:22,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:22,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:22,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:22,853 INFO L87 Difference]: Start difference. First operand 1881 states and 2318 transitions. Second operand 3 states. [2020-07-17 13:18:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:23,334 INFO L93 Difference]: Finished difference Result 3929 states and 5009 transitions. [2020-07-17 13:18:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:23,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-07-17 13:18:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:23,352 INFO L225 Difference]: With dead ends: 3929 [2020-07-17 13:18:23,352 INFO L226 Difference]: Without dead ends: 2198 [2020-07-17 13:18:23,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-07-17 13:18:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2142. [2020-07-17 13:18:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2020-07-17 13:18:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2603 transitions. [2020-07-17 13:18:23,572 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2603 transitions. Word has length 229 [2020-07-17 13:18:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:23,573 INFO L479 AbstractCegarLoop]: Abstraction has 2142 states and 2603 transitions. [2020-07-17 13:18:23,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2603 transitions. [2020-07-17 13:18:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-07-17 13:18:23,582 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:23,582 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:23,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 13:18:23,583 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:23,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:23,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1369562677, now seen corresponding path program 1 times [2020-07-17 13:18:23,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:23,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880278555] [2020-07-17 13:18:23,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:23,778 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:23,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880278555] [2020-07-17 13:18:23,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:23,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:23,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446206021] [2020-07-17 13:18:23,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:23,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:23,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:23,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:23,784 INFO L87 Difference]: Start difference. First operand 2142 states and 2603 transitions. Second operand 3 states. [2020-07-17 13:18:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:24,297 INFO L93 Difference]: Finished difference Result 4341 states and 5371 transitions. [2020-07-17 13:18:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:24,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-07-17 13:18:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:24,317 INFO L225 Difference]: With dead ends: 4341 [2020-07-17 13:18:24,317 INFO L226 Difference]: Without dead ends: 2349 [2020-07-17 13:18:24,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:24,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2020-07-17 13:18:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2295. [2020-07-17 13:18:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-07-17 13:18:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2780 transitions. [2020-07-17 13:18:24,585 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2780 transitions. Word has length 229 [2020-07-17 13:18:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:24,586 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 2780 transitions. [2020-07-17 13:18:24,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2780 transitions. [2020-07-17 13:18:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-17 13:18:24,604 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:24,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:24,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 13:18:24,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:24,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1436458987, now seen corresponding path program 1 times [2020-07-17 13:18:24,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:24,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864536776] [2020-07-17 13:18:24,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:24,794 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:24,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864536776] [2020-07-17 13:18:24,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:24,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:24,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966540393] [2020-07-17 13:18:24,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:24,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:24,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:24,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:24,797 INFO L87 Difference]: Start difference. First operand 2295 states and 2780 transitions. Second operand 3 states. [2020-07-17 13:18:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:25,152 INFO L93 Difference]: Finished difference Result 6366 states and 7725 transitions. [2020-07-17 13:18:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:25,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-07-17 13:18:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:25,181 INFO L225 Difference]: With dead ends: 6366 [2020-07-17 13:18:25,181 INFO L226 Difference]: Without dead ends: 4221 [2020-07-17 13:18:25,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2020-07-17 13:18:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 4219. [2020-07-17 13:18:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4219 states. [2020-07-17 13:18:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 5072 transitions. [2020-07-17 13:18:25,528 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 5072 transitions. Word has length 236 [2020-07-17 13:18:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:25,528 INFO L479 AbstractCegarLoop]: Abstraction has 4219 states and 5072 transitions. [2020-07-17 13:18:25,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 5072 transitions. [2020-07-17 13:18:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-17 13:18:25,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:25,543 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:25,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 13:18:25,543 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:25,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1625861187, now seen corresponding path program 1 times [2020-07-17 13:18:25,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:25,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935840154] [2020-07-17 13:18:25,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:25,693 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:25,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935840154] [2020-07-17 13:18:25,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:25,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:25,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222764032] [2020-07-17 13:18:25,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:25,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:25,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:25,698 INFO L87 Difference]: Start difference. First operand 4219 states and 5072 transitions. Second operand 3 states. [2020-07-17 13:18:26,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:26,065 INFO L93 Difference]: Finished difference Result 8366 states and 10078 transitions. [2020-07-17 13:18:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:26,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-17 13:18:26,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:26,089 INFO L225 Difference]: With dead ends: 8366 [2020-07-17 13:18:26,090 INFO L226 Difference]: Without dead ends: 4297 [2020-07-17 13:18:26,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2020-07-17 13:18:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4255. [2020-07-17 13:18:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4255 states. [2020-07-17 13:18:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5092 transitions. [2020-07-17 13:18:26,581 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5092 transitions. Word has length 237 [2020-07-17 13:18:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:26,581 INFO L479 AbstractCegarLoop]: Abstraction has 4255 states and 5092 transitions. [2020-07-17 13:18:26,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5092 transitions. [2020-07-17 13:18:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-17 13:18:26,603 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:26,604 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:26,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 13:18:26,608 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:26,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash 346316741, now seen corresponding path program 1 times [2020-07-17 13:18:26,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:26,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058517596] [2020-07-17 13:18:26,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:18:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:18:26,746 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:26,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058517596] [2020-07-17 13:18:26,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:18:26,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:18:26,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352031021] [2020-07-17 13:18:26,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:18:26,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:18:26,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:18:26,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:26,750 INFO L87 Difference]: Start difference. First operand 4255 states and 5092 transitions. Second operand 3 states. [2020-07-17 13:18:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:18:27,185 INFO L93 Difference]: Finished difference Result 8455 states and 10149 transitions. [2020-07-17 13:18:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:18:27,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-07-17 13:18:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:18:27,215 INFO L225 Difference]: With dead ends: 8455 [2020-07-17 13:18:27,216 INFO L226 Difference]: Without dead ends: 5649 [2020-07-17 13:18:27,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:18:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2020-07-17 13:18:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5649. [2020-07-17 13:18:27,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5649 states. [2020-07-17 13:18:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 6768 transitions. [2020-07-17 13:18:27,649 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 6768 transitions. Word has length 240 [2020-07-17 13:18:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:18:27,650 INFO L479 AbstractCegarLoop]: Abstraction has 5649 states and 6768 transitions. [2020-07-17 13:18:27,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:18:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 6768 transitions. [2020-07-17 13:18:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-07-17 13:18:27,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:18:27,668 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:18:27,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 13:18:27,668 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:18:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:18:27,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1652979383, now seen corresponding path program 1 times [2020-07-17 13:18:27,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:18:27,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458480984] [2020-07-17 13:18:27,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:18:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:18:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:18:27,877 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:18:27,878 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:18:27,879 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:18:27,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 13:18:27,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:18:27 BoogieIcfgContainer [2020-07-17 13:18:27,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:18:27,948 INFO L168 Benchmark]: Toolchain (without parser) took 10278.53 ms. Allocated memory was 141.0 MB in the beginning and 502.8 MB in the end (delta: 361.8 MB). Free memory was 102.0 MB in the beginning and 239.6 MB in the end (delta: -137.6 MB). Peak memory consumption was 224.1 MB. Max. memory is 7.1 GB. [2020-07-17 13:18:27,949 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-17 13:18:27,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.72 ms. Allocated memory was 141.0 MB in the beginning and 201.9 MB in the end (delta: 60.8 MB). Free memory was 101.5 MB in the beginning and 177.4 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:18:27,953 INFO L168 Benchmark]: Boogie Preprocessor took 57.40 ms. Allocated memory is still 201.9 MB. Free memory was 177.4 MB in the beginning and 174.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:18:27,956 INFO L168 Benchmark]: RCFGBuilder took 997.69 ms. Allocated memory is still 201.9 MB. Free memory was 174.6 MB in the beginning and 105.9 MB in the end (delta: 68.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:18:27,957 INFO L168 Benchmark]: TraceAbstraction took 8645.60 ms. Allocated memory was 201.9 MB in the beginning and 502.8 MB in the end (delta: 300.9 MB). Free memory was 105.2 MB in the beginning and 239.6 MB in the end (delta: -134.4 MB). Peak memory consumption was 166.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:18:27,964 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 570.72 ms. Allocated memory was 141.0 MB in the beginning and 201.9 MB in the end (delta: 60.8 MB). Free memory was 101.5 MB in the beginning and 177.4 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.40 ms. Allocated memory is still 201.9 MB. Free memory was 177.4 MB in the beginning and 174.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 997.69 ms. Allocated memory is still 201.9 MB. Free memory was 174.6 MB in the beginning and 105.9 MB in the end (delta: 68.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8645.60 ms. Allocated memory was 201.9 MB in the beginning and 502.8 MB in the end (delta: 300.9 MB). Free memory was 105.2 MB in the beginning and 239.6 MB in the end (delta: -134.4 MB). Peak memory consumption was 166.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 607]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L612] int s ; [L613] int tmp ; [L617] s = 8464 [L618] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [L88] s__in_handshake ++ [L89] COND FALSE !(tmp___1 + 12288) [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L296] COND TRUE \read(s__hit) [L297] s__state = 8656 [L301] s__init_num = 0 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND TRUE s__state == 8656 [L490] s__session__cipher = s__s3__tmp__new_cipher [L491] COND FALSE !(! tmp___9) [L495] ret = __VERIFIER_nondet_int() [L496] COND TRUE blastFlag == 2 [L497] blastFlag = 3 [L499] COND FALSE !(ret <= 0) [L502] s__state = 8672 [L503] s__init_num = 0 [L504] COND FALSE !(! tmp___10) [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND FALSE !(s__state == 8656) [L194] COND FALSE !(s__state == 8657) [L197] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND TRUE blastFlag == 3 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 411 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.5s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4756 SDtfs, 2850 SDslu, 4079 SDs, 0 SdLazy, 631 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 313 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5649occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 191 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...