/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:08:06,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:08:06,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:08:06,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:08:06,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:08:06,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:08:06,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:08:06,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:08:06,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:08:06,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:08:06,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:08:06,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:08:06,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:08:06,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:08:06,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:08:06,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:08:06,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:08:06,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:08:06,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:08:06,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:08:06,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:08:06,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:08:06,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:08:06,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:08:06,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:08:06,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:08:06,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:08:06,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:08:06,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:08:06,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:08:06,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:08:06,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:08:06,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:08:06,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:08:06,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:08:06,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:08:06,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:08:06,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:08:06,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:08:06,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:08:06,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:08:06,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 10:08:06,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:08:06,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:08:06,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:08:06,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:08:06,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:08:06,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:08:06,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:08:06,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:08:06,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:08:06,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:08:06,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:08:06,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:08:06,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:08:06,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:08:06,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:08:06,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:08:06,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:08:06,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:08:06,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:08:06,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:08:06,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:08:06,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:08:06,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:08:06,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:08:06,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:08:06,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:08:06,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:08:06,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:08:06,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:08:06,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:08:06,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:08:06,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:08:06,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:08:06,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:08:06,714 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:08:06,715 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-10-14 10:08:06,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a6fb524/79d8029436c14628b54bdff1f0e91b19/FLAG9f86f5463 [2020-10-14 10:08:07,272 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:08:07,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-10-14 10:08:07,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a6fb524/79d8029436c14628b54bdff1f0e91b19/FLAG9f86f5463 [2020-10-14 10:08:07,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a6fb524/79d8029436c14628b54bdff1f0e91b19 [2020-10-14 10:08:07,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:08:07,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:08:07,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:08:07,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:08:07,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:08:07,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600db5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07, skipping insertion in model container [2020-10-14 10:08:07,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:08:07,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:08:08,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:08:08,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:08:08,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:08:08,230 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:08:08,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08 WrapperNode [2020-10-14 10:08:08,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:08:08,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:08:08,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:08:08,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:08:08,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (1/1) ... [2020-10-14 10:08:08,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (1/1) ... [2020-10-14 10:08:08,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (1/1) ... [2020-10-14 10:08:08,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (1/1) ... [2020-10-14 10:08:08,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (1/1) ... [2020-10-14 10:08:08,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (1/1) ... [2020-10-14 10:08:08,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (1/1) ... [2020-10-14 10:08:08,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:08:08,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:08:08,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:08:08,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:08:08,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-14 10:08:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:08:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:08:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:08:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:08:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:08:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:08:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:08:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:08:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:08:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:08:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:08:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:08:08,617 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:08:09,160 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-14 10:08:09,161 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-14 10:08:09,172 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:08:09,173 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:08:09,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:09 BoogieIcfgContainer [2020-10-14 10:08:09,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:08:09,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:08:09,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:08:09,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:08:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:08:07" (1/3) ... [2020-10-14 10:08:09,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c740643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:09, skipping insertion in model container [2020-10-14 10:08:09,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:08" (2/3) ... [2020-10-14 10:08:09,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c740643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:09, skipping insertion in model container [2020-10-14 10:08:09,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:09" (3/3) ... [2020-10-14 10:08:09,188 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-10-14 10:08:09,199 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:08:09,208 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:08:09,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:08:09,249 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:08:09,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:08:09,249 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:08:09,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:08:09,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:08:09,250 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:08:09,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:08:09,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:08:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-14 10:08:09,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 10:08:09,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:09,281 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] [2020-10-14 10:08:09,281 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:09,287 INFO L82 PathProgramCache]: Analyzing trace with hash 317102767, now seen corresponding path program 1 times [2020-10-14 10:08:09,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:09,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349958247] [2020-10-14 10:08:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:10,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:10,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 10:08:10,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-14 10:08:10,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:10,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 10:08:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:08:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:08:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:10,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:10,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:10,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:10,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:10,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:10,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349958247] [2020-10-14 10:08:10,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:10,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:10,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556345153] [2020-10-14 10:08:10,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:10,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:10,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:10,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:10,420 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 3 states. [2020-10-14 10:08:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:10,837 INFO L93 Difference]: Finished difference Result 373 states and 642 transitions. [2020-10-14 10:08:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:10,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 10:08:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:10,855 INFO L225 Difference]: With dead ends: 373 [2020-10-14 10:08:10,855 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 10:08:10,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 10:08:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2020-10-14 10:08:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 10:08:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 278 transitions. [2020-10-14 10:08:10,924 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 278 transitions. Word has length 31 [2020-10-14 10:08:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:10,925 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 278 transitions. [2020-10-14 10:08:10,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 278 transitions. [2020-10-14 10:08:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 10:08:10,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:10,927 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] [2020-10-14 10:08:10,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:08:10,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash 966890690, now seen corresponding path program 1 times [2020-10-14 10:08:10,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:10,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571324074] [2020-10-14 10:08:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:11,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 10:08:11,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:08:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-14 10:08:11,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:11,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 10:08:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:08:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:11,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:11,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:11,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:08:11,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:11,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:11,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571324074] [2020-10-14 10:08:11,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:11,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:11,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211643756] [2020-10-14 10:08:11,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:11,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:11,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:11,600 INFO L87 Difference]: Start difference. First operand 189 states and 278 transitions. Second operand 3 states. [2020-10-14 10:08:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:11,827 INFO L93 Difference]: Finished difference Result 414 states and 628 transitions. [2020-10-14 10:08:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:11,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 10:08:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:11,830 INFO L225 Difference]: With dead ends: 414 [2020-10-14 10:08:11,831 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 10:08:11,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:11,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 10:08:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 212. [2020-10-14 10:08:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-14 10:08:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 313 transitions. [2020-10-14 10:08:11,848 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 313 transitions. Word has length 32 [2020-10-14 10:08:11,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:11,849 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 313 transitions. [2020-10-14 10:08:11,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 313 transitions. [2020-10-14 10:08:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 10:08:11,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:11,851 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] [2020-10-14 10:08:11,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:08:11,852 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:11,852 INFO L82 PathProgramCache]: Analyzing trace with hash 115186168, now seen corresponding path program 1 times [2020-10-14 10:08:11,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:11,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428259917] [2020-10-14 10:08:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 10:08:12,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 10:08:12,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:12,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:08:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:08:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:12,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:12,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:12,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:12,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:12,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:12,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428259917] [2020-10-14 10:08:12,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:12,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:12,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804864091] [2020-10-14 10:08:12,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:12,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:12,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:12,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:12,152 INFO L87 Difference]: Start difference. First operand 212 states and 313 transitions. Second operand 3 states. [2020-10-14 10:08:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:12,398 INFO L93 Difference]: Finished difference Result 462 states and 702 transitions. [2020-10-14 10:08:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:12,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-14 10:08:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:12,401 INFO L225 Difference]: With dead ends: 462 [2020-10-14 10:08:12,401 INFO L226 Difference]: Without dead ends: 251 [2020-10-14 10:08:12,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-14 10:08:12,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 236. [2020-10-14 10:08:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 10:08:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 352 transitions. [2020-10-14 10:08:12,416 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 352 transitions. Word has length 35 [2020-10-14 10:08:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:12,417 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 352 transitions. [2020-10-14 10:08:12,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 352 transitions. [2020-10-14 10:08:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 10:08:12,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:12,419 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] [2020-10-14 10:08:12,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:08:12,420 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:12,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2026060512, now seen corresponding path program 1 times [2020-10-14 10:08:12,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:12,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127693026] [2020-10-14 10:08:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:12,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 10:08:12,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 10:08:12,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:12,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:08:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 10:08:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:12,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:12,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:12,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:12,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:12,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:12,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:12,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127693026] [2020-10-14 10:08:12,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:12,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:12,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811006862] [2020-10-14 10:08:12,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:12,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:12,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:12,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:12,571 INFO L87 Difference]: Start difference. First operand 236 states and 352 transitions. Second operand 3 states. [2020-10-14 10:08:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:12,635 INFO L93 Difference]: Finished difference Result 682 states and 1022 transitions. [2020-10-14 10:08:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:12,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-14 10:08:12,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:12,638 INFO L225 Difference]: With dead ends: 682 [2020-10-14 10:08:12,639 INFO L226 Difference]: Without dead ends: 459 [2020-10-14 10:08:12,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-14 10:08:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2020-10-14 10:08:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-14 10:08:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 677 transitions. [2020-10-14 10:08:12,658 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 677 transitions. Word has length 38 [2020-10-14 10:08:12,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:12,659 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 677 transitions. [2020-10-14 10:08:12,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:12,659 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 677 transitions. [2020-10-14 10:08:12,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 10:08:12,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:12,661 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] [2020-10-14 10:08:12,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:08:12,661 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:12,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:12,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2011240475, now seen corresponding path program 1 times [2020-10-14 10:08:12,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:12,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980439885] [2020-10-14 10:08:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:13,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 10:08:13,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:13,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-14 10:08:13,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:13,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 10:08:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:08:13,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:13,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:13,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:13,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:13,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:13,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:13,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:08:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:13,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980439885] [2020-10-14 10:08:13,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:13,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:13,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664782082] [2020-10-14 10:08:13,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:13,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:13,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:13,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:13,106 INFO L87 Difference]: Start difference. First operand 457 states and 677 transitions. Second operand 3 states. [2020-10-14 10:08:13,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:13,343 INFO L93 Difference]: Finished difference Result 997 states and 1513 transitions. [2020-10-14 10:08:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:13,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-10-14 10:08:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:13,347 INFO L225 Difference]: With dead ends: 997 [2020-10-14 10:08:13,347 INFO L226 Difference]: Without dead ends: 553 [2020-10-14 10:08:13,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:13,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-14 10:08:13,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 543. [2020-10-14 10:08:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-14 10:08:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 781 transitions. [2020-10-14 10:08:13,364 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 781 transitions. Word has length 40 [2020-10-14 10:08:13,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:13,365 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 781 transitions. [2020-10-14 10:08:13,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 781 transitions. [2020-10-14 10:08:13,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 10:08:13,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:13,367 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] [2020-10-14 10:08:13,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:08:13,367 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:13,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1753075037, now seen corresponding path program 1 times [2020-10-14 10:08:13,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:13,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586803184] [2020-10-14 10:08:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:13,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 10:08:13,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 10:08:13,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:13,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 10:08:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:08:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:13,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:13,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:13,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:13,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:13,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:13,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586803184] [2020-10-14 10:08:13,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:13,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:13,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881432750] [2020-10-14 10:08:13,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:13,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:13,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:13,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:13,767 INFO L87 Difference]: Start difference. First operand 543 states and 781 transitions. Second operand 3 states. [2020-10-14 10:08:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:13,970 INFO L93 Difference]: Finished difference Result 1177 states and 1732 transitions. [2020-10-14 10:08:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:13,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-10-14 10:08:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:13,974 INFO L225 Difference]: With dead ends: 1177 [2020-10-14 10:08:13,974 INFO L226 Difference]: Without dead ends: 623 [2020-10-14 10:08:13,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-10-14 10:08:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 595. [2020-10-14 10:08:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-14 10:08:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 867 transitions. [2020-10-14 10:08:13,991 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 867 transitions. Word has length 40 [2020-10-14 10:08:13,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:13,991 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 867 transitions. [2020-10-14 10:08:13,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:13,992 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 867 transitions. [2020-10-14 10:08:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 10:08:13,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:13,993 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] [2020-10-14 10:08:13,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:08:13,993 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:13,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:13,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1536438553, now seen corresponding path program 1 times [2020-10-14 10:08:13,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:13,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127815556] [2020-10-14 10:08:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:14,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 10:08:14,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:08:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-14 10:08:14,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:14,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 10:08:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:08:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:14,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:14,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:14,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:08:14,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:14,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:14,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127815556] [2020-10-14 10:08:14,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:14,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:14,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187550880] [2020-10-14 10:08:14,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:14,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:14,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:14,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:14,744 INFO L87 Difference]: Start difference. First operand 595 states and 867 transitions. Second operand 3 states. [2020-10-14 10:08:14,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:14,989 INFO L93 Difference]: Finished difference Result 1299 states and 1936 transitions. [2020-10-14 10:08:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:14,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-10-14 10:08:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:14,995 INFO L225 Difference]: With dead ends: 1299 [2020-10-14 10:08:14,996 INFO L226 Difference]: Without dead ends: 693 [2020-10-14 10:08:14,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:15,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-10-14 10:08:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 651. [2020-10-14 10:08:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-14 10:08:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 961 transitions. [2020-10-14 10:08:15,025 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 961 transitions. Word has length 40 [2020-10-14 10:08:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:15,042 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 961 transitions. [2020-10-14 10:08:15,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:15,043 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 961 transitions. [2020-10-14 10:08:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 10:08:15,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:15,045 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] [2020-10-14 10:08:15,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:08:15,045 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:15,046 INFO L82 PathProgramCache]: Analyzing trace with hash 705113242, now seen corresponding path program 1 times [2020-10-14 10:08:15,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:15,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224620982] [2020-10-14 10:08:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:15,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:08:15,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:08:15,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-14 10:08:15,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:15,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 10:08:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:08:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:15,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:15,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:15,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:15,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:15,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:15,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224620982] [2020-10-14 10:08:15,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:15,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:15,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230751439] [2020-10-14 10:08:15,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:15,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:15,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:15,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:15,666 INFO L87 Difference]: Start difference. First operand 651 states and 961 transitions. Second operand 3 states. [2020-10-14 10:08:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:15,882 INFO L93 Difference]: Finished difference Result 1385 states and 2080 transitions. [2020-10-14 10:08:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:15,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-10-14 10:08:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:15,888 INFO L225 Difference]: With dead ends: 1385 [2020-10-14 10:08:15,888 INFO L226 Difference]: Without dead ends: 747 [2020-10-14 10:08:15,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:15,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-14 10:08:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 719. [2020-10-14 10:08:15,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-14 10:08:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1051 transitions. [2020-10-14 10:08:15,913 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1051 transitions. Word has length 42 [2020-10-14 10:08:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:15,914 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 1051 transitions. [2020-10-14 10:08:15,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1051 transitions. [2020-10-14 10:08:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 10:08:15,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:15,916 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] [2020-10-14 10:08:15,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:08:15,916 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:15,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:15,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1459197139, now seen corresponding path program 1 times [2020-10-14 10:08:15,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:15,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098532277] [2020-10-14 10:08:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:17,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 10:08:17,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:08:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-14 10:08:17,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:17,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 10:08:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:08:17,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:17,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:17,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:17,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:17,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:17,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:17,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:17,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:17,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:17,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098532277] [2020-10-14 10:08:17,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:17,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:17,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274844484] [2020-10-14 10:08:17,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:17,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:17,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:17,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:17,362 INFO L87 Difference]: Start difference. First operand 719 states and 1051 transitions. Second operand 3 states. [2020-10-14 10:08:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:17,447 INFO L93 Difference]: Finished difference Result 2113 states and 3085 transitions. [2020-10-14 10:08:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:17,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-10-14 10:08:17,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:17,455 INFO L225 Difference]: With dead ends: 2113 [2020-10-14 10:08:17,455 INFO L226 Difference]: Without dead ends: 1407 [2020-10-14 10:08:17,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2020-10-14 10:08:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1403. [2020-10-14 10:08:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-10-14 10:08:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2044 transitions. [2020-10-14 10:08:17,513 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2044 transitions. Word has length 45 [2020-10-14 10:08:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:17,515 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 2044 transitions. [2020-10-14 10:08:17,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2044 transitions. [2020-10-14 10:08:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:08:17,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:17,517 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] [2020-10-14 10:08:17,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:08:17,518 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:17,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:17,518 INFO L82 PathProgramCache]: Analyzing trace with hash -375056722, now seen corresponding path program 1 times [2020-10-14 10:08:17,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:17,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139542095] [2020-10-14 10:08:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:17,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 10:08:17,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:17,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 10:08:17,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:17,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:17,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:08:17,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 10:08:17,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:08:17,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:17,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:17,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:17,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:17,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:17,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:17,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139542095] [2020-10-14 10:08:17,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:17,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:08:17,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116630725] [2020-10-14 10:08:17,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:08:17,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:17,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:08:17,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:08:17,797 INFO L87 Difference]: Start difference. First operand 1403 states and 2044 transitions. Second operand 6 states. [2020-10-14 10:08:18,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:18,053 INFO L93 Difference]: Finished difference Result 3016 states and 4399 transitions. [2020-10-14 10:08:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:08:18,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-14 10:08:18,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:18,066 INFO L225 Difference]: With dead ends: 3016 [2020-10-14 10:08:18,066 INFO L226 Difference]: Without dead ends: 1626 [2020-10-14 10:08:18,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:08:18,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2020-10-14 10:08:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1531. [2020-10-14 10:08:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2020-10-14 10:08:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2220 transitions. [2020-10-14 10:08:18,145 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2220 transitions. Word has length 46 [2020-10-14 10:08:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:18,146 INFO L479 AbstractCegarLoop]: Abstraction has 1531 states and 2220 transitions. [2020-10-14 10:08:18,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:08:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2220 transitions. [2020-10-14 10:08:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:08:18,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:18,148 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:08:18,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:08:18,148 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:18,148 INFO L82 PathProgramCache]: Analyzing trace with hash 684750231, now seen corresponding path program 1 times [2020-10-14 10:08:18,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:18,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240846662] [2020-10-14 10:08:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 10:08:18,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 10:08:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:08:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:08:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:18,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:18,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240846662] [2020-10-14 10:08:18,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:18,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:18,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351305070] [2020-10-14 10:08:18,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:18,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:18,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:18,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:18,381 INFO L87 Difference]: Start difference. First operand 1531 states and 2220 transitions. Second operand 3 states. [2020-10-14 10:08:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:18,663 INFO L93 Difference]: Finished difference Result 3325 states and 4859 transitions. [2020-10-14 10:08:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:18,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-10-14 10:08:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:18,673 INFO L225 Difference]: With dead ends: 3325 [2020-10-14 10:08:18,673 INFO L226 Difference]: Without dead ends: 1719 [2020-10-14 10:08:18,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-10-14 10:08:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1653. [2020-10-14 10:08:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1653 states. [2020-10-14 10:08:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2302 transitions. [2020-10-14 10:08:18,775 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2302 transitions. Word has length 64 [2020-10-14 10:08:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:18,775 INFO L479 AbstractCegarLoop]: Abstraction has 1653 states and 2302 transitions. [2020-10-14 10:08:18,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2302 transitions. [2020-10-14 10:08:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 10:08:18,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:18,779 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1] [2020-10-14 10:08:18,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:08:18,779 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash -851388796, now seen corresponding path program 1 times [2020-10-14 10:08:18,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:18,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875529290] [2020-10-14 10:08:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:19,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 10:08:19,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:08:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-14 10:08:19,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:19,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 10:08:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:08:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:19,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:19,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 10:08:19,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875529290] [2020-10-14 10:08:19,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:19,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:19,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450064136] [2020-10-14 10:08:19,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:19,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:19,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:19,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:19,533 INFO L87 Difference]: Start difference. First operand 1653 states and 2302 transitions. Second operand 3 states. [2020-10-14 10:08:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:19,785 INFO L93 Difference]: Finished difference Result 3481 states and 4867 transitions. [2020-10-14 10:08:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:19,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-10-14 10:08:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:19,794 INFO L225 Difference]: With dead ends: 3481 [2020-10-14 10:08:19,794 INFO L226 Difference]: Without dead ends: 1777 [2020-10-14 10:08:19,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:19,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2020-10-14 10:08:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1725. [2020-10-14 10:08:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-10-14 10:08:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2398 transitions. [2020-10-14 10:08:19,871 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2398 transitions. Word has length 100 [2020-10-14 10:08:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:19,871 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2398 transitions. [2020-10-14 10:08:19,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2398 transitions. [2020-10-14 10:08:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 10:08:19,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:19,879 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1] [2020-10-14 10:08:19,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:08:19,880 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1557981007, now seen corresponding path program 1 times [2020-10-14 10:08:19,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:19,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616872601] [2020-10-14 10:08:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 10:08:20,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 10:08:20,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 10:08:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 10:08:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:20,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:08:20,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 10:08:20,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616872601] [2020-10-14 10:08:20,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:20,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:20,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005704550] [2020-10-14 10:08:20,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:20,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:20,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:20,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:20,075 INFO L87 Difference]: Start difference. First operand 1725 states and 2398 transitions. Second operand 3 states. [2020-10-14 10:08:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:20,191 INFO L93 Difference]: Finished difference Result 3439 states and 4798 transitions. [2020-10-14 10:08:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:20,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-10-14 10:08:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:20,203 INFO L225 Difference]: With dead ends: 3439 [2020-10-14 10:08:20,204 INFO L226 Difference]: Without dead ends: 2582 [2020-10-14 10:08:20,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:20,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-10-14 10:08:20,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2580. [2020-10-14 10:08:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2580 states. [2020-10-14 10:08:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3585 transitions. [2020-10-14 10:08:20,302 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3585 transitions. Word has length 107 [2020-10-14 10:08:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:20,302 INFO L479 AbstractCegarLoop]: Abstraction has 2580 states and 3585 transitions. [2020-10-14 10:08:20,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3585 transitions. [2020-10-14 10:08:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 10:08:20,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:20,306 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1] [2020-10-14 10:08:20,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:08:20,306 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2144787021, now seen corresponding path program 1 times [2020-10-14 10:08:20,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:20,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215921007] [2020-10-14 10:08:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 10:08:20,331 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 10:08:20,331 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 10:08:20,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:08:20,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 10:08:20 BoogieIcfgContainer [2020-10-14 10:08:20,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 10:08:20,387 INFO L168 Benchmark]: Toolchain (without parser) took 12728.54 ms. Allocated memory was 145.2 MB in the beginning and 444.6 MB in the end (delta: 299.4 MB). Free memory was 100.8 MB in the beginning and 317.0 MB in the end (delta: -216.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:20,389 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 10:08:20,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.86 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 100.8 MB in the beginning and 174.5 MB in the end (delta: -73.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:20,390 INFO L168 Benchmark]: Boogie Preprocessor took 108.38 ms. Allocated memory is still 200.8 MB. Free memory was 174.5 MB in the beginning and 172.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:20,397 INFO L168 Benchmark]: RCFGBuilder took 837.28 ms. Allocated memory is still 200.8 MB. Free memory was 172.5 MB in the beginning and 118.4 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:20,398 INFO L168 Benchmark]: TraceAbstraction took 11204.18 ms. Allocated memory was 200.8 MB in the beginning and 444.6 MB in the end (delta: 243.8 MB). Free memory was 117.3 MB in the beginning and 317.0 MB in the end (delta: -199.6 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:20,403 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 573.86 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 100.8 MB in the beginning and 174.5 MB in the end (delta: -73.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.38 ms. Allocated memory is still 200.8 MB. Free memory was 174.5 MB in the beginning and 172.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 837.28 ms. Allocated memory is still 200.8 MB. Free memory was 172.5 MB in the beginning and 118.4 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11204.18 ms. Allocated memory was 200.8 MB in the beginning and 444.6 MB in the end (delta: 243.8 MB). Free memory was 117.3 MB in the beginning and 317.0 MB in the end (delta: -199.6 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 642]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L653] 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 ; [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 ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength ; [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 = __VERIFIER_nondet_int() ; [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 ; [L72] s__state = initial_state [L73] blastFlag = 0 [L74] tmp = __VERIFIER_nondet_int() [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND FALSE !(\read(s__hit)) [L294] s__state = 8512 [L296] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND TRUE s__state == 8512 [L301] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L302] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L303] COND TRUE __cil_tmp56 + 256UL [L304] skip = 1 [L315] s__state = 8528 [L316] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND TRUE s__state == 8528 [L320] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L321] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L323] __cil_tmp57 = (unsigned long )s__options [L324] COND TRUE __cil_tmp57 + 2097152UL [L325] s__s3__tmp__use_rsa_tmp = 1 [L330] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L357] ret = __VERIFIER_nondet_int() [L358] COND FALSE !(blastFlag == 6) [L361] COND FALSE !(ret <= 0) [L378] s__state = 8544 [L379] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND TRUE ! s__s3__tmp__reuse_message [L601] COND TRUE ! skip [L602] COND TRUE state == 8528 [L603] COND TRUE s__state == 8544 [L604] COND TRUE tmp___7 != 1024 [L605] COND TRUE tmp___7 != 512 [L606] COND TRUE __cil_tmp58 != 4294967294 [L607] COND TRUE l != 4294967266 [L642] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 161 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.0s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3110 SDtfs, 1667 SDslu, 2094 SDs, 0 SdLazy, 1347 SolverSat, 428 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2580occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 359 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 767 NumberOfCodeBlocks, 767 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 75925 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 165/165 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...