/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 SingleStatement --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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:57:04,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:57:04,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:57:04,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:57:04,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:57:04,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:57:04,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:57:04,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:57:04,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:57:04,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:57:04,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:57:04,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:57:04,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:57:04,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:57:04,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:57:04,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:57:04,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:57:04,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:57:04,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:57:04,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:57:04,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:57:04,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:57:04,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:57:04,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:57:04,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:57:04,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:57:04,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:57:04,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:57:04,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:57:04,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:57:04,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:57:04,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:57:04,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:57:04,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:57:04,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:57:04,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:57:04,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:57:04,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:57:04,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:57:04,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:57:04,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:57:04,236 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 [2020-09-25 08:57:04,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:57:04,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:57:04,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:57:04,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:57:04,266 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:57:04,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:57:04,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:57:04,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:57:04,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:57:04,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:57:04,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:57:04,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:57:04,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:57:04,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:57:04,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:57:04,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:57:04,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:57:04,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:57:04,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:57:04,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:57:04,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:57:04,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:57:04,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:57:04,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:57:04,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:57:04,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:57:04,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:57:04,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:57:04,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:57:04,271 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 -> SingleStatement 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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=true; [2020-09-25 08:57:04,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:57:04,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:57:04,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:57:04,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:57:04,817 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:57:04,818 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 08:57:04,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8bd566ae/2094e827378f40ac9dedc6d4d000d5e0/FLAG50636e9de [2020-09-25 08:57:05,494 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:57:05,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 08:57:05,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8bd566ae/2094e827378f40ac9dedc6d4d000d5e0/FLAG50636e9de [2020-09-25 08:57:05,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8bd566ae/2094e827378f40ac9dedc6d4d000d5e0 [2020-09-25 08:57:05,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:57:05,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:57:05,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:05,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:57:05,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:57:05,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:05" (1/1) ... [2020-09-25 08:57:05,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bb1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:05, skipping insertion in model container [2020-09-25 08:57:05,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:05" (1/1) ... [2020-09-25 08:57:05,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:57:05,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:57:06,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:06,251 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:57:06,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:06,423 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:57:06,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06 WrapperNode [2020-09-25 08:57:06,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:06,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:57:06,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:57:06,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:57:06,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (1/1) ... [2020-09-25 08:57:06,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (1/1) ... [2020-09-25 08:57:06,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (1/1) ... [2020-09-25 08:57:06,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (1/1) ... [2020-09-25 08:57:06,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (1/1) ... [2020-09-25 08:57:06,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (1/1) ... [2020-09-25 08:57:06,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (1/1) ... [2020-09-25 08:57:06,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:57:06,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:57:06,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:57:06,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:57:06,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (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 [2020-09-25 08:57:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:57:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:57:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 08:57:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:57:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:57:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:57:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:57:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 08:57:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 08:57:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:57:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:57:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:57:06,867 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 08:57:07,577 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 08:57:07,578 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 08:57:07,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:57:07,596 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:57:07,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:07 BoogieIcfgContainer [2020-09-25 08:57:07,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:57:07,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:57:07,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:57:07,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:57:07,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:57:05" (1/3) ... [2020-09-25 08:57:07,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd24815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:07, skipping insertion in model container [2020-09-25 08:57:07,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:06" (2/3) ... [2020-09-25 08:57:07,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd24815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:07, skipping insertion in model container [2020-09-25 08:57:07,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:07" (3/3) ... [2020-09-25 08:57:07,615 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-25 08:57:07,627 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:57:07,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:57:07,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:57:07,694 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:57:07,694 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:57:07,694 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:57:07,695 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:57:07,695 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:57:07,695 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:57:07,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:57:07,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:57:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-25 08:57:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 08:57:07,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:07,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:07,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-25 08:57:07,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:07,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906494819] [2020-09-25 08:57:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:09,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 08:57:09,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1356 [2020-09-25 08:57:09,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:09,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-09-25 08:57:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:57:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:57:09,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:09,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:09,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:57:09,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:09,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:09,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:09,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906494819] [2020-09-25 08:57:09,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:09,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:09,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159737656] [2020-09-25 08:57:09,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:09,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:09,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:09,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:09,583 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 4 states. [2020-09-25 08:57:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:10,052 INFO L93 Difference]: Finished difference Result 756 states and 995 transitions. [2020-09-25 08:57:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:10,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 08:57:10,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:10,095 INFO L225 Difference]: With dead ends: 756 [2020-09-25 08:57:10,095 INFO L226 Difference]: Without dead ends: 425 [2020-09-25 08:57:10,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:10,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-09-25 08:57:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 414. [2020-09-25 08:57:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-09-25 08:57:10,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 500 transitions. [2020-09-25 08:57:10,227 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 500 transitions. Word has length 158 [2020-09-25 08:57:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:10,228 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 500 transitions. [2020-09-25 08:57:10,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 500 transitions. [2020-09-25 08:57:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 08:57:10,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:10,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:10,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:57:10,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:10,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:10,235 INFO L82 PathProgramCache]: Analyzing trace with hash -948298101, now seen corresponding path program 1 times [2020-09-25 08:57:10,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:10,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290909402] [2020-09-25 08:57:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:10,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:11,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 08:57:11,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-09-25 08:57:11,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:11,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-09-25 08:57:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:57:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:11,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:11,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:11,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:11,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:11,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:11,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:11,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:11,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:11,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:11,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290909402] [2020-09-25 08:57:11,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:11,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:11,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631791700] [2020-09-25 08:57:11,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:11,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:11,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:11,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:11,334 INFO L87 Difference]: Start difference. First operand 414 states and 500 transitions. Second operand 4 states. [2020-09-25 08:57:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:11,708 INFO L93 Difference]: Finished difference Result 490 states and 595 transitions. [2020-09-25 08:57:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:11,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 08:57:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:11,713 INFO L225 Difference]: With dead ends: 490 [2020-09-25 08:57:11,713 INFO L226 Difference]: Without dead ends: 488 [2020-09-25 08:57:11,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-09-25 08:57:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 452. [2020-09-25 08:57:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-09-25 08:57:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 546 transitions. [2020-09-25 08:57:11,735 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 546 transitions. Word has length 163 [2020-09-25 08:57:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:11,736 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 546 transitions. [2020-09-25 08:57:11,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 546 transitions. [2020-09-25 08:57:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 08:57:11,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:11,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:11,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:57:11,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1511382065, now seen corresponding path program 1 times [2020-09-25 08:57:11,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:11,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456190761] [2020-09-25 08:57:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:13,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 08:57:13,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1799 [2020-09-25 08:57:13,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:13,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-09-25 08:57:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:57:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:13,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:13,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:13,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:13,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456190761] [2020-09-25 08:57:13,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:13,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:13,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193940393] [2020-09-25 08:57:13,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:13,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:13,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:13,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:13,665 INFO L87 Difference]: Start difference. First operand 452 states and 546 transitions. Second operand 4 states. [2020-09-25 08:57:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:13,944 INFO L93 Difference]: Finished difference Result 487 states and 593 transitions. [2020-09-25 08:57:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:13,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-25 08:57:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:13,949 INFO L225 Difference]: With dead ends: 487 [2020-09-25 08:57:13,949 INFO L226 Difference]: Without dead ends: 485 [2020-09-25 08:57:13,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-09-25 08:57:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 428. [2020-09-25 08:57:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-25 08:57:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 519 transitions. [2020-09-25 08:57:13,969 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 519 transitions. Word has length 164 [2020-09-25 08:57:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:13,971 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 519 transitions. [2020-09-25 08:57:13,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:13,971 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 519 transitions. [2020-09-25 08:57:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 08:57:13,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:13,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:13,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:57:13,977 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:13,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:13,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1830665339, now seen corresponding path program 1 times [2020-09-25 08:57:13,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:13,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173915465] [2020-09-25 08:57:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:14,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 08:57:14,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:14,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-09-25 08:57:14,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:14,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:14,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:14,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 08:57:14,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:57:14,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:14,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:14,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:14,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:14,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:14,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173915465] [2020-09-25 08:57:14,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:14,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:14,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995304135] [2020-09-25 08:57:14,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:14,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:14,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:14,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:14,993 INFO L87 Difference]: Start difference. First operand 428 states and 519 transitions. Second operand 3 states. [2020-09-25 08:57:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:15,028 INFO L93 Difference]: Finished difference Result 990 states and 1248 transitions. [2020-09-25 08:57:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:15,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-09-25 08:57:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:15,033 INFO L225 Difference]: With dead ends: 990 [2020-09-25 08:57:15,034 INFO L226 Difference]: Without dead ends: 705 [2020-09-25 08:57:15,035 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 [2020-09-25 08:57:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-25 08:57:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 692. [2020-09-25 08:57:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-09-25 08:57:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 859 transitions. [2020-09-25 08:57:15,069 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 859 transitions. Word has length 164 [2020-09-25 08:57:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:15,069 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 859 transitions. [2020-09-25 08:57:15,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 859 transitions. [2020-09-25 08:57:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 08:57:15,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:15,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:15,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:57:15,074 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:15,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1143844992, now seen corresponding path program 1 times [2020-09-25 08:57:15,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:15,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630186685] [2020-09-25 08:57:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 08:57:16,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-09-25 08:57:16,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-25 08:57:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 08:57:16,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:16,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:16,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:16,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:16,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630186685] [2020-09-25 08:57:16,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:16,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995844799] [2020-09-25 08:57:16,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:16,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:16,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,111 INFO L87 Difference]: Start difference. First operand 692 states and 859 transitions. Second operand 3 states. [2020-09-25 08:57:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:16,152 INFO L93 Difference]: Finished difference Result 1786 states and 2278 transitions. [2020-09-25 08:57:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:16,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-09-25 08:57:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:16,159 INFO L225 Difference]: With dead ends: 1786 [2020-09-25 08:57:16,159 INFO L226 Difference]: Without dead ends: 1238 [2020-09-25 08:57:16,161 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 [2020-09-25 08:57:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-09-25 08:57:16,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 960. [2020-09-25 08:57:16,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-25 08:57:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1207 transitions. [2020-09-25 08:57:16,195 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1207 transitions. Word has length 165 [2020-09-25 08:57:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:16,196 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1207 transitions. [2020-09-25 08:57:16,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1207 transitions. [2020-09-25 08:57:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 08:57:16,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:16,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:16,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:57:16,200 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:16,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1205884606, now seen corresponding path program 1 times [2020-09-25 08:57:16,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:16,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217654215] [2020-09-25 08:57:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 08:57:16,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-25 08:57:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:57:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:57:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 08:57:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:16,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:16,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:16,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:16,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217654215] [2020-09-25 08:57:16,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:57:16,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189976031] [2020-09-25 08:57:16,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:57:16,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:57:16,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:57:16,947 INFO L87 Difference]: Start difference. First operand 960 states and 1207 transitions. Second operand 7 states. [2020-09-25 08:57:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:17,519 INFO L93 Difference]: Finished difference Result 2675 states and 3451 transitions. [2020-09-25 08:57:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:57:17,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 08:57:17,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:17,534 INFO L225 Difference]: With dead ends: 2675 [2020-09-25 08:57:17,534 INFO L226 Difference]: Without dead ends: 1860 [2020-09-25 08:57:17,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:57:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2020-09-25 08:57:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1296. [2020-09-25 08:57:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-09-25 08:57:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1685 transitions. [2020-09-25 08:57:17,628 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1685 transitions. Word has length 165 [2020-09-25 08:57:17,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:17,629 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1685 transitions. [2020-09-25 08:57:17,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:57:17,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1685 transitions. [2020-09-25 08:57:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 08:57:17,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:17,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:17,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:57:17,638 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:17,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:17,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1260886713, now seen corresponding path program 1 times [2020-09-25 08:57:17,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:17,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093693962] [2020-09-25 08:57:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:18,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 08:57:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-25 08:57:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:18,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-25 08:57:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 08:57:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:18,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:18,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:18,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:18,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:18,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:18,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093693962] [2020-09-25 08:57:18,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:18,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:18,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264680348] [2020-09-25 08:57:18,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:18,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:18,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:18,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:18,873 INFO L87 Difference]: Start difference. First operand 1296 states and 1685 transitions. Second operand 3 states. [2020-09-25 08:57:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:19,021 INFO L93 Difference]: Finished difference Result 3556 states and 4715 transitions. [2020-09-25 08:57:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:19,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2020-09-25 08:57:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:19,035 INFO L225 Difference]: With dead ends: 3556 [2020-09-25 08:57:19,035 INFO L226 Difference]: Without dead ends: 2405 [2020-09-25 08:57:19,039 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 [2020-09-25 08:57:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2020-09-25 08:57:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2403. [2020-09-25 08:57:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-09-25 08:57:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3138 transitions. [2020-09-25 08:57:19,142 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3138 transitions. Word has length 178 [2020-09-25 08:57:19,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:19,143 INFO L479 AbstractCegarLoop]: Abstraction has 2403 states and 3138 transitions. [2020-09-25 08:57:19,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3138 transitions. [2020-09-25 08:57:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 08:57:19,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:19,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:19,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:57:19,151 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:19,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:19,151 INFO L82 PathProgramCache]: Analyzing trace with hash -794584973, now seen corresponding path program 1 times [2020-09-25 08:57:19,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:19,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872756332] [2020-09-25 08:57:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:22,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 08:57:22,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:22,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3076 [2020-09-25 08:57:22,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:22,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:22,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-25 08:57:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:57:22,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:22,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:22,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:22,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:22,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:22,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:57:22,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872756332] [2020-09-25 08:57:22,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:22,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:22,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850298910] [2020-09-25 08:57:22,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:22,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:22,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:22,344 INFO L87 Difference]: Start difference. First operand 2403 states and 3138 transitions. Second operand 4 states. [2020-09-25 08:57:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:22,708 INFO L93 Difference]: Finished difference Result 2901 states and 3786 transitions. [2020-09-25 08:57:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:22,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-09-25 08:57:22,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:22,722 INFO L225 Difference]: With dead ends: 2901 [2020-09-25 08:57:22,722 INFO L226 Difference]: Without dead ends: 2899 [2020-09-25 08:57:22,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-25 08:57:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2387. [2020-09-25 08:57:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2387 states. [2020-09-25 08:57:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 3122 transitions. [2020-09-25 08:57:22,834 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 3122 transitions. Word has length 187 [2020-09-25 08:57:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:22,835 INFO L479 AbstractCegarLoop]: Abstraction has 2387 states and 3122 transitions. [2020-09-25 08:57:22,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 3122 transitions. [2020-09-25 08:57:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 08:57:22,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:22,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:22,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:57:22,845 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:22,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1478410120, now seen corresponding path program 1 times [2020-09-25 08:57:22,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:22,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819562167] [2020-09-25 08:57:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 08:57:27,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:57:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:57:27,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-09-25 08:57:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:57:27,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:27,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:27,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:27,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819562167] [2020-09-25 08:57:27,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:27,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:27,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351389942] [2020-09-25 08:57:28,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:28,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:28,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:28,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:28,001 INFO L87 Difference]: Start difference. First operand 2387 states and 3122 transitions. Second operand 4 states. [2020-09-25 08:57:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:28,404 INFO L93 Difference]: Finished difference Result 5183 states and 7090 transitions. [2020-09-25 08:57:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:28,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-09-25 08:57:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:28,417 INFO L225 Difference]: With dead ends: 5183 [2020-09-25 08:57:28,418 INFO L226 Difference]: Without dead ends: 2255 [2020-09-25 08:57:28,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2020-09-25 08:57:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2245. [2020-09-25 08:57:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-09-25 08:57:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 2922 transitions. [2020-09-25 08:57:28,504 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 2922 transitions. Word has length 191 [2020-09-25 08:57:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:28,505 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 2922 transitions. [2020-09-25 08:57:28,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 2922 transitions. [2020-09-25 08:57:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 08:57:28,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:28,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:28,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:57:28,514 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:28,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:28,514 INFO L82 PathProgramCache]: Analyzing trace with hash -276336224, now seen corresponding path program 1 times [2020-09-25 08:57:28,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:28,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042737013] [2020-09-25 08:57:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:29,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:29,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:29,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 08:57:29,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:57:29,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-09-25 08:57:29,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:29,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-25 08:57:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 08:57:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:29,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:29,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:29,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:29,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:29,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:29,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:29,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:30,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042737013] [2020-09-25 08:57:30,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:30,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:30,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301895238] [2020-09-25 08:57:30,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:30,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:30,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:30,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:30,057 INFO L87 Difference]: Start difference. First operand 2245 states and 2922 transitions. Second operand 3 states. [2020-09-25 08:57:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:30,127 INFO L93 Difference]: Finished difference Result 4345 states and 5695 transitions. [2020-09-25 08:57:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:30,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-09-25 08:57:30,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:30,138 INFO L225 Difference]: With dead ends: 4345 [2020-09-25 08:57:30,139 INFO L226 Difference]: Without dead ends: 2245 [2020-09-25 08:57:30,143 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 [2020-09-25 08:57:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-09-25 08:57:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2020-09-25 08:57:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-09-25 08:57:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 2902 transitions. [2020-09-25 08:57:30,219 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 2902 transitions. Word has length 191 [2020-09-25 08:57:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:30,219 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 2902 transitions. [2020-09-25 08:57:30,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 2902 transitions. [2020-09-25 08:57:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 08:57:30,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:30,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:30,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:57:30,226 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:30,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1284192527, now seen corresponding path program 1 times [2020-09-25 08:57:30,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:30,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92983785] [2020-09-25 08:57:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:30,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:31,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:31,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 08:57:31,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-09-25 08:57:31,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:31,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-25 08:57:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:57:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:31,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:31,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:31,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:31,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:57:31,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92983785] [2020-09-25 08:57:31,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:31,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:31,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857270628] [2020-09-25 08:57:31,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:31,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:31,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:31,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:31,500 INFO L87 Difference]: Start difference. First operand 2245 states and 2902 transitions. Second operand 3 states. [2020-09-25 08:57:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:31,625 INFO L93 Difference]: Finished difference Result 4331 states and 5640 transitions. [2020-09-25 08:57:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:31,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-09-25 08:57:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:31,636 INFO L225 Difference]: With dead ends: 4331 [2020-09-25 08:57:31,637 INFO L226 Difference]: Without dead ends: 2231 [2020-09-25 08:57:31,645 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 [2020-09-25 08:57:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-09-25 08:57:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2221. [2020-09-25 08:57:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2020-09-25 08:57:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2872 transitions. [2020-09-25 08:57:31,729 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2872 transitions. Word has length 192 [2020-09-25 08:57:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:31,729 INFO L479 AbstractCegarLoop]: Abstraction has 2221 states and 2872 transitions. [2020-09-25 08:57:31,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2872 transitions. [2020-09-25 08:57:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 08:57:31,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:31,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:31,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:57:31,736 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:31,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1725459691, now seen corresponding path program 1 times [2020-09-25 08:57:31,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:31,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403850341] [2020-09-25 08:57:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:31,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:32,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 08:57:32,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:57:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-09-25 08:57:32,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:32,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-25 08:57:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:57:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:32,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:32,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:32,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:32,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:32,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:32,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403850341] [2020-09-25 08:57:32,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:32,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:32,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563966746] [2020-09-25 08:57:32,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:32,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:32,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:32,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:32,674 INFO L87 Difference]: Start difference. First operand 2221 states and 2872 transitions. Second operand 3 states. [2020-09-25 08:57:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:32,752 INFO L93 Difference]: Finished difference Result 4351 states and 5657 transitions. [2020-09-25 08:57:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:32,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-09-25 08:57:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:32,763 INFO L225 Difference]: With dead ends: 4351 [2020-09-25 08:57:32,764 INFO L226 Difference]: Without dead ends: 2275 [2020-09-25 08:57:32,769 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 [2020-09-25 08:57:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2020-09-25 08:57:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2269. [2020-09-25 08:57:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2269 states. [2020-09-25 08:57:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 2908 transitions. [2020-09-25 08:57:32,852 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 2908 transitions. Word has length 193 [2020-09-25 08:57:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:32,853 INFO L479 AbstractCegarLoop]: Abstraction has 2269 states and 2908 transitions. [2020-09-25 08:57:32,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 2908 transitions. [2020-09-25 08:57:32,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 08:57:32,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:32,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:32,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:57:32,864 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:32,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1236276045, now seen corresponding path program 1 times [2020-09-25 08:57:32,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:32,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669086757] [2020-09-25 08:57:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:34,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:37,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 08:57:37,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:57:37,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:57:37,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:37,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:37,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:37,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 08:57:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:57:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:37,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:37,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:37,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:37,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:38,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669086757] [2020-09-25 08:57:38,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:38,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:38,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463087002] [2020-09-25 08:57:38,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:38,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:38,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:38,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:38,007 INFO L87 Difference]: Start difference. First operand 2269 states and 2908 transitions. Second operand 4 states. [2020-09-25 08:57:38,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:38,506 INFO L93 Difference]: Finished difference Result 7147 states and 9492 transitions. [2020-09-25 08:57:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:38,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-09-25 08:57:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:38,529 INFO L225 Difference]: With dead ends: 7147 [2020-09-25 08:57:38,529 INFO L226 Difference]: Without dead ends: 5023 [2020-09-25 08:57:38,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:38,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2020-09-25 08:57:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 2669. [2020-09-25 08:57:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2669 states. [2020-09-25 08:57:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3338 transitions. [2020-09-25 08:57:38,646 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3338 transitions. Word has length 196 [2020-09-25 08:57:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:38,646 INFO L479 AbstractCegarLoop]: Abstraction has 2669 states and 3338 transitions. [2020-09-25 08:57:38,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3338 transitions. [2020-09-25 08:57:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 08:57:38,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:38,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:38,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:57:38,654 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:38,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1182578789, now seen corresponding path program 1 times [2020-09-25 08:57:38,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:38,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076393216] [2020-09-25 08:57:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:41,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:43,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 08:57:43,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:57:43,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:57:43,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:43,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:43,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:43,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 08:57:43,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:57:43,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:43,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:43,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:43,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:43,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:43,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:43,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076393216] [2020-09-25 08:57:43,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:43,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:43,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387618715] [2020-09-25 08:57:43,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:43,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:43,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:43,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:43,762 INFO L87 Difference]: Start difference. First operand 2669 states and 3338 transitions. Second operand 4 states. [2020-09-25 08:57:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:44,299 INFO L93 Difference]: Finished difference Result 8641 states and 11266 transitions. [2020-09-25 08:57:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:44,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-09-25 08:57:44,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:44,328 INFO L225 Difference]: With dead ends: 8641 [2020-09-25 08:57:44,328 INFO L226 Difference]: Without dead ends: 5949 [2020-09-25 08:57:44,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5949 states. [2020-09-25 08:57:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5949 to 3027. [2020-09-25 08:57:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3027 states. [2020-09-25 08:57:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 3810 transitions. [2020-09-25 08:57:44,514 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 3810 transitions. Word has length 197 [2020-09-25 08:57:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:44,514 INFO L479 AbstractCegarLoop]: Abstraction has 3027 states and 3810 transitions. [2020-09-25 08:57:44,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 3810 transitions. [2020-09-25 08:57:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 08:57:44,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:44,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:44,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:57:44,523 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:44,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1300989194, now seen corresponding path program 1 times [2020-09-25 08:57:44,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:44,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112886417] [2020-09-25 08:57:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:45,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 08:57:45,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:57:45,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-09-25 08:57:45,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:45,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:45,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 08:57:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:57:45,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:57:45,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:45,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:45,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112886417] [2020-09-25 08:57:45,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:45,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:45,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800023457] [2020-09-25 08:57:45,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:45,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:45,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:45,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:45,657 INFO L87 Difference]: Start difference. First operand 3027 states and 3810 transitions. Second operand 4 states. [2020-09-25 08:57:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:45,911 INFO L93 Difference]: Finished difference Result 11371 states and 14435 transitions. [2020-09-25 08:57:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:45,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-25 08:57:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:45,942 INFO L225 Difference]: With dead ends: 11371 [2020-09-25 08:57:45,942 INFO L226 Difference]: Without dead ends: 8489 [2020-09-25 08:57:45,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8489 states. [2020-09-25 08:57:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8489 to 5533. [2020-09-25 08:57:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5533 states. [2020-09-25 08:57:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 6984 transitions. [2020-09-25 08:57:46,135 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 6984 transitions. Word has length 199 [2020-09-25 08:57:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:46,135 INFO L479 AbstractCegarLoop]: Abstraction has 5533 states and 6984 transitions. [2020-09-25 08:57:46,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:46,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 6984 transitions. [2020-09-25 08:57:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 08:57:46,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:46,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:46,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 08:57:46,152 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:46,152 INFO L82 PathProgramCache]: Analyzing trace with hash -99230353, now seen corresponding path program 1 times [2020-09-25 08:57:46,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:46,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99913513] [2020-09-25 08:57:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 08:57:46,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:46,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-09-25 08:57:46,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 08:57:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:57:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:46,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:46,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:46,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:46,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:46,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:46,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:46,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:46,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99913513] [2020-09-25 08:57:46,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:46,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:46,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230461979] [2020-09-25 08:57:46,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:46,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:46,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:46,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:46,805 INFO L87 Difference]: Start difference. First operand 5533 states and 6984 transitions. Second operand 3 states. [2020-09-25 08:57:47,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:47,151 INFO L93 Difference]: Finished difference Result 8819 states and 11326 transitions. [2020-09-25 08:57:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:47,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-09-25 08:57:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:47,166 INFO L225 Difference]: With dead ends: 8819 [2020-09-25 08:57:47,166 INFO L226 Difference]: Without dead ends: 5986 [2020-09-25 08:57:47,174 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 [2020-09-25 08:57:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2020-09-25 08:57:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 5787. [2020-09-25 08:57:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5787 states. [2020-09-25 08:57:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 7322 transitions. [2020-09-25 08:57:47,340 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 7322 transitions. Word has length 199 [2020-09-25 08:57:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:47,341 INFO L479 AbstractCegarLoop]: Abstraction has 5787 states and 7322 transitions. [2020-09-25 08:57:47,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 7322 transitions. [2020-09-25 08:57:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 08:57:47,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:47,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:47,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 08:57:47,354 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:47,354 INFO L82 PathProgramCache]: Analyzing trace with hash -912264382, now seen corresponding path program 1 times [2020-09-25 08:57:47,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:47,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018824797] [2020-09-25 08:57:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 08:57:47,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:47,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 08:57:47,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 08:57:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 08:57:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:47,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:47,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:47,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:47,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018824797] [2020-09-25 08:57:47,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:47,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:47,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588584330] [2020-09-25 08:57:47,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:47,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:47,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:47,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:47,556 INFO L87 Difference]: Start difference. First operand 5787 states and 7322 transitions. Second operand 3 states. [2020-09-25 08:57:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:47,810 INFO L93 Difference]: Finished difference Result 11693 states and 14924 transitions. [2020-09-25 08:57:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:47,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-25 08:57:47,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:47,831 INFO L225 Difference]: With dead ends: 11693 [2020-09-25 08:57:47,831 INFO L226 Difference]: Without dead ends: 8678 [2020-09-25 08:57:47,840 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 [2020-09-25 08:57:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8678 states. [2020-09-25 08:57:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8678 to 8668. [2020-09-25 08:57:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8668 states. [2020-09-25 08:57:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 10956 transitions. [2020-09-25 08:57:48,150 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 10956 transitions. Word has length 200 [2020-09-25 08:57:48,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:48,151 INFO L479 AbstractCegarLoop]: Abstraction has 8668 states and 10956 transitions. [2020-09-25 08:57:48,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:48,151 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 10956 transitions. [2020-09-25 08:57:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 08:57:48,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:48,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:48,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 08:57:48,173 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:48,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:48,174 INFO L82 PathProgramCache]: Analyzing trace with hash -657328746, now seen corresponding path program 1 times [2020-09-25 08:57:48,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:48,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025654747] [2020-09-25 08:57:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking...