/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:36:32,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:36:32,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:36:32,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:36:32,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:36:32,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:36:32,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:36:32,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:36:32,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:36:32,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:36:32,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:36:32,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:36:32,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:36:32,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:36:32,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:36:32,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:36:32,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:36:32,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:36:32,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:36:32,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:36:32,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:36:32,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:36:32,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:36:32,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:36:32,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:36:32,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:36:32,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:36:32,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:36:32,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:36:32,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:36:32,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:36:32,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:36:32,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:36:32,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:36:32,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:36:32,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:36:32,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:36:32,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:36:32,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:36:32,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:36:32,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:36:32,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 09:36:32,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:36:32,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:36:32,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:36:32,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:36:32,257 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:36:32,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:36:32,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:36:32,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:36:32,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:36:32,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:36:32,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:36:32,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:36:32,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:36:32,261 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:36:32,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:36:32,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:36:32,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:36:32,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:36:32,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:36:32,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:36:32,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:36:32,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:36:32,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:36:32,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:36:32,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:36:32,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:36:32,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:36:32,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:36:32,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:36:32,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:36:32,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:36:32,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:36:32,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:36:32,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:36:32,736 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:36:32,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-10-28 09:36:32,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a4d7b2d0/7b84e680c82644f5bba579b7dd5c4e22/FLAGfd8707d54 [2020-10-28 09:36:33,534 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:36:33,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-10-28 09:36:33,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a4d7b2d0/7b84e680c82644f5bba579b7dd5c4e22/FLAGfd8707d54 [2020-10-28 09:36:33,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a4d7b2d0/7b84e680c82644f5bba579b7dd5c4e22 [2020-10-28 09:36:33,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:36:33,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:36:33,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:36:33,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:36:33,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:36:33,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:36:33" (1/1) ... [2020-10-28 09:36:33,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e742bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:33, skipping insertion in model container [2020-10-28 09:36:33,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:36:33" (1/1) ... [2020-10-28 09:36:33,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:36:33,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:36:34,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:36:34,135 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:36:34,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:36:34,213 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:36:34,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34 WrapperNode [2020-10-28 09:36:34,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:36:34,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:36:34,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:36:34,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:36:34,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (1/1) ... [2020-10-28 09:36:34,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (1/1) ... [2020-10-28 09:36:34,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (1/1) ... [2020-10-28 09:36:34,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (1/1) ... [2020-10-28 09:36:34,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (1/1) ... [2020-10-28 09:36:34,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (1/1) ... [2020-10-28 09:36:34,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (1/1) ... [2020-10-28 09:36:34,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:36:34,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:36:34,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:36:34,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:36:34,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:36:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:36:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:36:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:36:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-28 09:36:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:36:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:36:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:36:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:36:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:36:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:36:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 09:36:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-28 09:36:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:36:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:36:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:36:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:36:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:36:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:36:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:36:34,665 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 09:36:35,204 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-28 09:36:35,204 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-28 09:36:35,220 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:36:35,221 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 09:36:35,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:35 BoogieIcfgContainer [2020-10-28 09:36:35,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:36:35,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:36:35,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:36:35,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:36:35,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:36:33" (1/3) ... [2020-10-28 09:36:35,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52887225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:36:35, skipping insertion in model container [2020-10-28 09:36:35,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:34" (2/3) ... [2020-10-28 09:36:35,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52887225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:36:35, skipping insertion in model container [2020-10-28 09:36:35,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:35" (3/3) ... [2020-10-28 09:36:35,234 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2020-10-28 09:36:35,249 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:36:35,255 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:36:35,272 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:36:35,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:36:35,305 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:36:35,305 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:36:35,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:36:35,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:36:35,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:36:35,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:36:35,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:36:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-28 09:36:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 09:36:35,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:35,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:35,342 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1167654252, now seen corresponding path program 1 times [2020-10-28 09:36:35,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:35,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79987829] [2020-10-28 09:36:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:36,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 09:36:36,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:36:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-28 09:36:36,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:36,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:36:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:36:36,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:36:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:36,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:36,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:36:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:36,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:36:36,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79987829] [2020-10-28 09:36:36,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:36,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:36,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131061914] [2020-10-28 09:36:36,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:36,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:36,381 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 4 states. [2020-10-28 09:36:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:36,998 INFO L93 Difference]: Finished difference Result 374 states and 632 transitions. [2020-10-28 09:36:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:37,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-28 09:36:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:37,012 INFO L225 Difference]: With dead ends: 374 [2020-10-28 09:36:37,013 INFO L226 Difference]: Without dead ends: 216 [2020-10-28 09:36:37,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:36:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-28 09:36:37,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-28 09:36:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-28 09:36:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 322 transitions. [2020-10-28 09:36:37,088 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 322 transitions. Word has length 31 [2020-10-28 09:36:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:37,089 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 322 transitions. [2020-10-28 09:36:37,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 322 transitions. [2020-10-28 09:36:37,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:36:37,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:37,093 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:36:37,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:36:37,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:37,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:37,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1344111123, now seen corresponding path program 1 times [2020-10-28 09:36:37,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:37,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716730841] [2020-10-28 09:36:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 09:36:37,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:36:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-28 09:36:37,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:37,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 09:36:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:36:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:36:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:37,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:37,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:36:37,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:37,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:37,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:36:37,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716730841] [2020-10-28 09:36:37,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:37,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:37,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419567661] [2020-10-28 09:36:37,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:37,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:37,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:37,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:37,713 INFO L87 Difference]: Start difference. First operand 216 states and 322 transitions. Second operand 4 states. [2020-10-28 09:36:38,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:38,202 INFO L93 Difference]: Finished difference Result 419 states and 632 transitions. [2020-10-28 09:36:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:38,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-28 09:36:38,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:38,207 INFO L225 Difference]: With dead ends: 419 [2020-10-28 09:36:38,207 INFO L226 Difference]: Without dead ends: 316 [2020-10-28 09:36:38,209 INFO L677 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 [2020-10-28 09:36:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-28 09:36:38,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2020-10-28 09:36:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-28 09:36:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 472 transitions. [2020-10-28 09:36:38,255 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 472 transitions. Word has length 45 [2020-10-28 09:36:38,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:38,255 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 472 transitions. [2020-10-28 09:36:38,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 472 transitions. [2020-10-28 09:36:38,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 09:36:38,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:38,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:38,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:36:38,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash -117927831, now seen corresponding path program 1 times [2020-10-28 09:36:38,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:38,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14651269] [2020-10-28 09:36:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:38,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:38,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 09:36:38,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:36:38,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-28 09:36:38,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:38,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 09:36:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:36:38,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:38,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:38,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:36:38,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:38,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:36:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 09:36:38,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14651269] [2020-10-28 09:36:38,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:38,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:38,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904241136] [2020-10-28 09:36:38,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:38,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:38,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:38,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:38,707 INFO L87 Difference]: Start difference. First operand 316 states and 472 transitions. Second operand 4 states. [2020-10-28 09:36:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:39,109 INFO L93 Difference]: Finished difference Result 619 states and 932 transitions. [2020-10-28 09:36:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:39,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-28 09:36:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:39,113 INFO L225 Difference]: With dead ends: 619 [2020-10-28 09:36:39,113 INFO L226 Difference]: Without dead ends: 416 [2020-10-28 09:36:39,116 INFO L677 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 [2020-10-28 09:36:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-28 09:36:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2020-10-28 09:36:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-28 09:36:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 623 transitions. [2020-10-28 09:36:39,143 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 623 transitions. Word has length 62 [2020-10-28 09:36:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:39,144 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 623 transitions. [2020-10-28 09:36:39,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 623 transitions. [2020-10-28 09:36:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 09:36:39,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:39,148 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:39,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:36:39,149 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:39,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:39,149 INFO L82 PathProgramCache]: Analyzing trace with hash 707546793, now seen corresponding path program 1 times [2020-10-28 09:36:39,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:39,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130602186] [2020-10-28 09:36:39,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:39,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:39,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:36:39,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:36:39,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-28 09:36:39,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:39,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 09:36:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:36:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:39,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:39,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:39,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:39,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:39,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:36:39,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:39,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 09:36:39,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130602186] [2020-10-28 09:36:39,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:39,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:39,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614935284] [2020-10-28 09:36:39,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:39,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:39,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:39,862 INFO L87 Difference]: Start difference. First operand 416 states and 623 transitions. Second operand 4 states. [2020-10-28 09:36:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:40,222 INFO L93 Difference]: Finished difference Result 819 states and 1234 transitions. [2020-10-28 09:36:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:40,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-28 09:36:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:40,226 INFO L225 Difference]: With dead ends: 819 [2020-10-28 09:36:40,227 INFO L226 Difference]: Without dead ends: 516 [2020-10-28 09:36:40,228 INFO L677 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 [2020-10-28 09:36:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-28 09:36:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-28 09:36:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-28 09:36:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-28 09:36:40,257 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-28 09:36:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:40,257 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-28 09:36:40,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-28 09:36:40,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 09:36:40,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:40,260 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:40,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:36:40,260 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:40,261 INFO L82 PathProgramCache]: Analyzing trace with hash 656460913, now seen corresponding path program 1 times [2020-10-28 09:36:40,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:40,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61193445] [2020-10-28 09:36:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:40,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 09:36:40,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:36:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-28 09:36:40,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:40,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 09:36:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:36:40,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:40,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:40,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:40,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:40,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:40,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-28 09:36:40,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61193445] [2020-10-28 09:36:40,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:40,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:40,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057319458] [2020-10-28 09:36:40,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:40,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:40,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:40,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:40,827 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-28 09:36:41,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:41,258 INFO L93 Difference]: Finished difference Result 619 states and 931 transitions. [2020-10-28 09:36:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:41,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-28 09:36:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:41,270 INFO L225 Difference]: With dead ends: 619 [2020-10-28 09:36:41,270 INFO L226 Difference]: Without dead ends: 616 [2020-10-28 09:36:41,271 INFO L677 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 [2020-10-28 09:36:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-10-28 09:36:41,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2020-10-28 09:36:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-10-28 09:36:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 928 transitions. [2020-10-28 09:36:41,309 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 928 transitions. Word has length 100 [2020-10-28 09:36:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:41,310 INFO L481 AbstractCegarLoop]: Abstraction has 616 states and 928 transitions. [2020-10-28 09:36:41,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 928 transitions. [2020-10-28 09:36:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 09:36:41,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:41,319 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:41,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:36:41,319 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1711642734, now seen corresponding path program 1 times [2020-10-28 09:36:41,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:41,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803640732] [2020-10-28 09:36:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:41,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 09:36:42,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:36:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-10-28 09:36:42,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 09:36:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:36:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:42,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:36:42,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 09:36:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-28 09:36:42,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803640732] [2020-10-28 09:36:42,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:42,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6808928] [2020-10-28 09:36:42,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:42,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:42,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:42,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:42,539 INFO L87 Difference]: Start difference. First operand 616 states and 928 transitions. Second operand 4 states. [2020-10-28 09:36:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:43,032 INFO L93 Difference]: Finished difference Result 1543 states and 2402 transitions. [2020-10-28 09:36:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:43,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-28 09:36:43,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:43,039 INFO L225 Difference]: With dead ends: 1543 [2020-10-28 09:36:43,039 INFO L226 Difference]: Without dead ends: 940 [2020-10-28 09:36:43,043 INFO L677 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 [2020-10-28 09:36:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-10-28 09:36:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 862. [2020-10-28 09:36:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-28 09:36:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1234 transitions. [2020-10-28 09:36:43,096 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1234 transitions. Word has length 115 [2020-10-28 09:36:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:43,097 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1234 transitions. [2020-10-28 09:36:43,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:43,097 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1234 transitions. [2020-10-28 09:36:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 09:36:43,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:43,101 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:43,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:36:43,101 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:43,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:43,102 INFO L82 PathProgramCache]: Analyzing trace with hash -815641018, now seen corresponding path program 1 times [2020-10-28 09:36:43,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:43,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462980779] [2020-10-28 09:36:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:43,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 09:36:43,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:36:43,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-28 09:36:43,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:43,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 09:36:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:36:43,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:43,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:43,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:43,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:43,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:43,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:43,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:43,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-28 09:36:44,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462980779] [2020-10-28 09:36:44,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:44,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:44,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656246184] [2020-10-28 09:36:44,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:44,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:44,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:44,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:44,019 INFO L87 Difference]: Start difference. First operand 862 states and 1234 transitions. Second operand 4 states. [2020-10-28 09:36:44,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:44,502 INFO L93 Difference]: Finished difference Result 2011 states and 2979 transitions. [2020-10-28 09:36:44,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:44,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-28 09:36:44,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:44,511 INFO L225 Difference]: With dead ends: 2011 [2020-10-28 09:36:44,512 INFO L226 Difference]: Without dead ends: 1156 [2020-10-28 09:36:44,514 INFO L677 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 [2020-10-28 09:36:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2020-10-28 09:36:44,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1108. [2020-10-28 09:36:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2020-10-28 09:36:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1534 transitions. [2020-10-28 09:36:44,562 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1534 transitions. Word has length 132 [2020-10-28 09:36:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:44,562 INFO L481 AbstractCegarLoop]: Abstraction has 1108 states and 1534 transitions. [2020-10-28 09:36:44,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1534 transitions. [2020-10-28 09:36:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 09:36:44,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:44,567 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:44,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:36:44,567 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:44,568 INFO L82 PathProgramCache]: Analyzing trace with hash 910827492, now seen corresponding path program 1 times [2020-10-28 09:36:44,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:44,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046103839] [2020-10-28 09:36:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 09:36:45,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:36:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-28 09:36:45,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:45,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-28 09:36:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:36:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:45,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:45,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:45,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:45,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:45,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:45,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-28 09:36:45,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046103839] [2020-10-28 09:36:45,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:45,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:45,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086831381] [2020-10-28 09:36:45,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:45,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:45,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:45,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:45,225 INFO L87 Difference]: Start difference. First operand 1108 states and 1534 transitions. Second operand 4 states. [2020-10-28 09:36:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:45,691 INFO L93 Difference]: Finished difference Result 2521 states and 3607 transitions. [2020-10-28 09:36:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:45,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-28 09:36:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:45,700 INFO L225 Difference]: With dead ends: 2521 [2020-10-28 09:36:45,700 INFO L226 Difference]: Without dead ends: 1426 [2020-10-28 09:36:45,704 INFO L677 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 [2020-10-28 09:36:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2020-10-28 09:36:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1222. [2020-10-28 09:36:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2020-10-28 09:36:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1720 transitions. [2020-10-28 09:36:45,753 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1720 transitions. Word has length 144 [2020-10-28 09:36:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:45,754 INFO L481 AbstractCegarLoop]: Abstraction has 1222 states and 1720 transitions. [2020-10-28 09:36:45,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1720 transitions. [2020-10-28 09:36:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 09:36:45,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:45,758 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 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] [2020-10-28 09:36:45,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:36:45,759 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:45,759 INFO L82 PathProgramCache]: Analyzing trace with hash -29820466, now seen corresponding path program 1 times [2020-10-28 09:36:45,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:45,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891146318] [2020-10-28 09:36:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:46,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 09:36:46,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:36:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-28 09:36:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:46,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 09:36:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 09:36:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:46,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:46,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:46,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:36:46,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:46,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-28 09:36:46,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891146318] [2020-10-28 09:36:46,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:46,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:46,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016842308] [2020-10-28 09:36:46,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:46,862 INFO L87 Difference]: Start difference. First operand 1222 states and 1720 transitions. Second operand 4 states. [2020-10-28 09:36:47,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:47,328 INFO L93 Difference]: Finished difference Result 3028 states and 4262 transitions. [2020-10-28 09:36:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:47,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-28 09:36:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:47,338 INFO L225 Difference]: With dead ends: 3028 [2020-10-28 09:36:47,338 INFO L226 Difference]: Without dead ends: 1819 [2020-10-28 09:36:47,342 INFO L677 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 [2020-10-28 09:36:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2020-10-28 09:36:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1819. [2020-10-28 09:36:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1819 states. [2020-10-28 09:36:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2553 transitions. [2020-10-28 09:36:47,420 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2553 transitions. Word has length 160 [2020-10-28 09:36:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:47,420 INFO L481 AbstractCegarLoop]: Abstraction has 1819 states and 2553 transitions. [2020-10-28 09:36:47,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2553 transitions. [2020-10-28 09:36:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 09:36:47,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:47,426 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 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] [2020-10-28 09:36:47,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:36:47,427 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:47,427 INFO L82 PathProgramCache]: Analyzing trace with hash 454405990, now seen corresponding path program 1 times [2020-10-28 09:36:47,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:47,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858908241] [2020-10-28 09:36:47,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:47,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:47,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 09:36:47,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:36:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-28 09:36:47,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:47,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-28 09:36:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:36:47,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:48,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:48,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:48,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:48,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:48,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:48,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:48,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:48,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-28 09:36:48,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858908241] [2020-10-28 09:36:48,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:48,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:48,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710117760] [2020-10-28 09:36:48,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:48,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:48,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:48,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:48,109 INFO L87 Difference]: Start difference. First operand 1819 states and 2553 transitions. Second operand 4 states. [2020-10-28 09:36:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:48,686 INFO L93 Difference]: Finished difference Result 4093 states and 5902 transitions. [2020-10-28 09:36:48,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:48,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-28 09:36:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:48,699 INFO L225 Difference]: With dead ends: 4093 [2020-10-28 09:36:48,700 INFO L226 Difference]: Without dead ends: 2287 [2020-10-28 09:36:48,707 INFO L677 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 [2020-10-28 09:36:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2020-10-28 09:36:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2008. [2020-10-28 09:36:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-28 09:36:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2868 transitions. [2020-10-28 09:36:48,802 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2868 transitions. Word has length 162 [2020-10-28 09:36:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:48,803 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 2868 transitions. [2020-10-28 09:36:48,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2868 transitions. [2020-10-28 09:36:48,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 09:36:48,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:48,809 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:48,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:36:48,810 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:48,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:48,810 INFO L82 PathProgramCache]: Analyzing trace with hash -390111806, now seen corresponding path program 1 times [2020-10-28 09:36:48,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:48,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837947683] [2020-10-28 09:36:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:49,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 09:36:49,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:36:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-28 09:36:49,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:49,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-28 09:36:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:36:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:49,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:49,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:49,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:36:49,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:49,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:49,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-28 09:36:49,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837947683] [2020-10-28 09:36:49,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:49,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:49,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177707372] [2020-10-28 09:36:49,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:49,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:49,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:49,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:49,891 INFO L87 Difference]: Start difference. First operand 2008 states and 2868 transitions. Second operand 4 states. [2020-10-28 09:36:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:50,345 INFO L93 Difference]: Finished difference Result 4804 states and 6952 transitions. [2020-10-28 09:36:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:50,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-28 09:36:50,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:50,359 INFO L225 Difference]: With dead ends: 4804 [2020-10-28 09:36:50,359 INFO L226 Difference]: Without dead ends: 2593 [2020-10-28 09:36:50,365 INFO L677 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 [2020-10-28 09:36:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2020-10-28 09:36:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2503. [2020-10-28 09:36:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-10-28 09:36:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3588 transitions. [2020-10-28 09:36:50,482 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3588 transitions. Word has length 165 [2020-10-28 09:36:50,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:50,483 INFO L481 AbstractCegarLoop]: Abstraction has 2503 states and 3588 transitions. [2020-10-28 09:36:50,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:50,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3588 transitions. [2020-10-28 09:36:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 09:36:50,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:50,490 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:50,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:36:50,491 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:50,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:50,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1970348134, now seen corresponding path program 1 times [2020-10-28 09:36:50,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:50,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077922804] [2020-10-28 09:36:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:51,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 09:36:51,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:36:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-10-28 09:36:51,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:51,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 09:36:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 09:36:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:51,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:51,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:51,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:51,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:51,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:51,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-28 09:36:51,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077922804] [2020-10-28 09:36:51,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:51,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:51,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334277221] [2020-10-28 09:36:51,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:51,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:51,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:51,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:51,656 INFO L87 Difference]: Start difference. First operand 2503 states and 3588 transitions. Second operand 4 states. [2020-10-28 09:36:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:52,145 INFO L93 Difference]: Finished difference Result 6923 states and 10027 transitions. [2020-10-28 09:36:52,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:52,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-10-28 09:36:52,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:52,169 INFO L225 Difference]: With dead ends: 6923 [2020-10-28 09:36:52,170 INFO L226 Difference]: Without dead ends: 4433 [2020-10-28 09:36:52,176 INFO L677 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 [2020-10-28 09:36:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2020-10-28 09:36:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4432. [2020-10-28 09:36:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4432 states. [2020-10-28 09:36:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 6428 transitions. [2020-10-28 09:36:52,368 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 6428 transitions. Word has length 194 [2020-10-28 09:36:52,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:52,368 INFO L481 AbstractCegarLoop]: Abstraction has 4432 states and 6428 transitions. [2020-10-28 09:36:52,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 6428 transitions. [2020-10-28 09:36:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 09:36:52,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:52,384 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 09:36:52,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:36:52,384 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:52,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1755565362, now seen corresponding path program 1 times [2020-10-28 09:36:52,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:52,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460818857] [2020-10-28 09:36:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:52,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 09:36:52,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:36:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-28 09:36:52,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:52,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:36:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:36:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:52,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:52,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:52,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:52,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:52,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:36:52,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:52,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:52,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:52,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:52,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:52,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-28 09:36:52,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460818857] [2020-10-28 09:36:52,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:52,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:52,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581336797] [2020-10-28 09:36:52,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:52,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:52,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:52,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:52,947 INFO L87 Difference]: Start difference. First operand 4432 states and 6428 transitions. Second operand 4 states. [2020-10-28 09:36:53,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:53,427 INFO L93 Difference]: Finished difference Result 9013 states and 13037 transitions. [2020-10-28 09:36:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:53,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-10-28 09:36:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:53,452 INFO L225 Difference]: With dead ends: 9013 [2020-10-28 09:36:53,452 INFO L226 Difference]: Without dead ends: 4594 [2020-10-28 09:36:53,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:36:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2020-10-28 09:36:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 4432. [2020-10-28 09:36:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4432 states. [2020-10-28 09:36:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 6374 transitions. [2020-10-28 09:36:53,638 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 6374 transitions. Word has length 194 [2020-10-28 09:36:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:53,638 INFO L481 AbstractCegarLoop]: Abstraction has 4432 states and 6374 transitions. [2020-10-28 09:36:53,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 6374 transitions. [2020-10-28 09:36:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 09:36:53,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:53,650 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 09:36:53,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:36:53,651 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:53,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1104362738, now seen corresponding path program 1 times [2020-10-28 09:36:53,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:53,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968903611] [2020-10-28 09:36:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:53,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 09:36:53,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 09:36:53,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:53,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:53,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:53,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 09:36:53,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:36:53,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:53,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:53,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:53,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:53,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:53,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:53,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-28 09:36:53,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968903611] [2020-10-28 09:36:53,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:36:53,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:36:53,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269648855] [2020-10-28 09:36:53,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:36:53,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:53,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:36:53,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:36:53,978 INFO L87 Difference]: Start difference. First operand 4432 states and 6374 transitions. Second operand 4 states. [2020-10-28 09:36:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:54,549 INFO L93 Difference]: Finished difference Result 9788 states and 14228 transitions. [2020-10-28 09:36:54,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:36:54,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-10-28 09:36:54,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:54,600 INFO L225 Difference]: With dead ends: 9788 [2020-10-28 09:36:54,601 INFO L226 Difference]: Without dead ends: 5063 [2020-10-28 09:36:54,616 INFO L677 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 [2020-10-28 09:36:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5063 states. [2020-10-28 09:36:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5063 to 4846. [2020-10-28 09:36:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4846 states. [2020-10-28 09:36:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 6986 transitions. [2020-10-28 09:36:54,827 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 6986 transitions. Word has length 194 [2020-10-28 09:36:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:54,827 INFO L481 AbstractCegarLoop]: Abstraction has 4846 states and 6986 transitions. [2020-10-28 09:36:54,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:36:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 6986 transitions. [2020-10-28 09:36:54,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-28 09:36:54,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:54,840 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 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] [2020-10-28 09:36:54,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:36:54,841 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:54,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1143359639, now seen corresponding path program 1 times [2020-10-28 09:36:54,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:54,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356453577] [2020-10-28 09:36:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 09:36:54,885 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 09:36:54,885 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:36:54,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:36:54,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:36:54 BoogieIcfgContainer [2020-10-28 09:36:54,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:36:54,977 INFO L168 Benchmark]: Toolchain (without parser) took 21151.50 ms. Allocated memory was 125.8 MB in the beginning and 493.9 MB in the end (delta: 368.1 MB). Free memory was 100.7 MB in the beginning and 196.5 MB in the end (delta: -95.8 MB). Peak memory consumption was 272.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:54,978 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 85.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:36:54,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.15 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 85.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:54,979 INFO L168 Benchmark]: Boogie Preprocessor took 74.40 ms. Allocated memory is still 125.8 MB. Free memory was 85.9 MB in the beginning and 83.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:54,986 INFO L168 Benchmark]: RCFGBuilder took 933.35 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 83.4 MB in the beginning and 98.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:54,987 INFO L168 Benchmark]: TraceAbstraction took 19748.38 ms. Allocated memory was 151.0 MB in the beginning and 493.9 MB in the end (delta: 342.9 MB). Free memory was 98.1 MB in the beginning and 196.5 MB in the end (delta: -98.4 MB). Peak memory consumption was 244.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:54,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 85.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 383.15 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 85.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.40 ms. Allocated memory is still 125.8 MB. Free memory was 85.9 MB in the beginning and 83.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 933.35 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 83.4 MB in the beginning and 98.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19748.38 ms. Allocated memory was 151.0 MB in the beginning and 493.9 MB in the end (delta: 342.9 MB). Free memory was 98.1 MB in the beginning and 196.5 MB in the end (delta: -98.4 MB). Peak memory consumption was 244.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 358. Possible FailurePath: [L619] int __retres1 ; [L623] CALL ssl3_connect() [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND FALSE !(s__bbio != s__wbio) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND TRUE blastFlag == 3 [L326] blastFlag = 4 [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND FALSE !(blastFlag == 5) [L353] COND FALSE !(ret <= 0) [L358] s__state = ag_X ^ ag_Y [L359] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND FALSE !(s__bbio != s__wbio) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND FALSE !(blastFlag == 3) [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND TRUE blastFlag == 5 [L610] CALL reach_error() [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-1a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 138 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.5s, OverallIterations: 15, TraceHistogramMax: 11, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2560 SDtfs, 4937 SDslu, 115 SDs, 0 SdLazy, 2372 SolverSat, 376 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4846occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 1079 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 1981 NumberOfCodeBlocks, 1981 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1764 ConstructedInterpolants, 0 QuantifiedInterpolants, 525118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 3403/3403 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...