/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/forester-heap/sll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:10:33,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:10:33,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:10:33,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:10:33,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:10:33,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:10:33,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:10:33,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:10:33,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:10:33,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:10:33,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:10:33,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:10:33,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:10:33,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:10:33,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:10:33,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:10:33,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:10:33,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:10:33,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:10:33,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:10:33,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:10:33,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:10:33,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:10:33,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:10:33,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:10:33,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:10:33,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:10:33,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:10:33,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:10:33,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:10:33,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:10:33,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:10:33,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:10:33,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:10:33,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:10:33,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:10:33,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:10:33,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:10:33,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:10:33,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:10:33,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:10:33,222 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 [2020-10-29 09:10:33,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:10:33,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:10:33,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:10:33,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:10:33,276 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:10:33,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:10:33,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:10:33,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:10:33,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:10:33,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:10:33,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:10:33,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:10:33,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:10:33,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:10:33,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:10:33,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:10:33,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:10:33,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:10:33,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:10:33,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:10:33,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:10:33,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:10:33,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:10:33,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:10:33,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:10:33,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:10:33,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:10:33,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:10:33,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:10:33,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:10:33,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:10:33,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:10:33,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:10:33,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:10:33,698 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:10:33,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-1.i [2020-10-29 09:10:33,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76f0519e3/96010616a7f34da881c25643e4a4c51a/FLAG0c9280786 [2020-10-29 09:10:34,447 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:10:34,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-circular-1.i [2020-10-29 09:10:34,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76f0519e3/96010616a7f34da881c25643e4a4c51a/FLAG0c9280786 [2020-10-29 09:10:34,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76f0519e3/96010616a7f34da881c25643e4a4c51a [2020-10-29 09:10:34,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:10:34,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:10:34,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:34,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:10:34,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:10:34,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:34" (1/1) ... [2020-10-29 09:10:34,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188e9be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:34, skipping insertion in model container [2020-10-29 09:10:34,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:34" (1/1) ... [2020-10-29 09:10:34,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:10:34,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:10:35,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:35,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:10:35,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:35,451 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:10:35,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35 WrapperNode [2020-10-29 09:10:35,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:35,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:10:35,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:10:35,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:10:35,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (1/1) ... [2020-10-29 09:10:35,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (1/1) ... [2020-10-29 09:10:35,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (1/1) ... [2020-10-29 09:10:35,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (1/1) ... [2020-10-29 09:10:35,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (1/1) ... [2020-10-29 09:10:35,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (1/1) ... [2020-10-29 09:10:35,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (1/1) ... [2020-10-29 09:10:35,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:10:35,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:10:35,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:10:35,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:10:35,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (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 [2020-10-29 09:10:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:10:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:10:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:10:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:10:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:10:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:10:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:10:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:10:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:10:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:10:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:10:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:10:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:10:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:10:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:10:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:10:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:10:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:10:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:10:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:10:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:10:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:10:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:10:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:10:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:10:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:10:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:10:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:10:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:10:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:10:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:10:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:10:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:10:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:10:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:10:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:10:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:10:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:10:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:10:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:10:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:10:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:10:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:10:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:10:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:10:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:10:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:10:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:10:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:10:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:10:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:10:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:10:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:10:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:10:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:10:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:10:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:10:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:10:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:10:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:10:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:10:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:10:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:10:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:10:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:10:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:10:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:10:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:10:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:10:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:10:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:10:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:10:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:10:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:10:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:10:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:10:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:10:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:10:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:10:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:10:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:10:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:10:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:10:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:10:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:10:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:10:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:10:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:10:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:10:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:10:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:10:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:10:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:10:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:10:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:10:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:10:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:10:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:10:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:10:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:10:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:10:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:10:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:10:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:10:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:10:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:10:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:10:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:10:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:10:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:10:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:10:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:10:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:10:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:10:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:10:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:10:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:10:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:10:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:10:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:10:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:10:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:10:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:10:36,505 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:10:36,506 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-29 09:10:36,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:36 BoogieIcfgContainer [2020-10-29 09:10:36,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:10:36,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:10:36,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:10:36,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:10:36,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:10:34" (1/3) ... [2020-10-29 09:10:36,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e50f72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:36, skipping insertion in model container [2020-10-29 09:10:36,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:35" (2/3) ... [2020-10-29 09:10:36,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e50f72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:36, skipping insertion in model container [2020-10-29 09:10:36,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:36" (3/3) ... [2020-10-29 09:10:36,518 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2020-10-29 09:10:36,531 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:10:36,536 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:10:36,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:10:36,576 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:10:36,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:10:36,577 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:10:36,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:10:36,577 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:10:36,577 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:10:36,577 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:10:36,577 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:10:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-29 09:10:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:10:36,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:36,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:36,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:36,612 INFO L82 PathProgramCache]: Analyzing trace with hash -323057978, now seen corresponding path program 1 times [2020-10-29 09:10:36,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:36,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690083722] [2020-10-29 09:10:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:36,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:36,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:10:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-29 09:10:37,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:37,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:10:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:10:37,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:10:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:10:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:37,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:37,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:37,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690083722] [2020-10-29 09:10:37,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:37,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:10:37,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167013007] [2020-10-29 09:10:37,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:10:37,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:37,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:10:37,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:10:37,416 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 5 states. [2020-10-29 09:10:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:37,663 INFO L93 Difference]: Finished difference Result 88 states and 142 transitions. [2020-10-29 09:10:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:10:37,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-29 09:10:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:37,675 INFO L225 Difference]: With dead ends: 88 [2020-10-29 09:10:37,675 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:10:37,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:10:37,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-29 09:10:37,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 09:10:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-10-29 09:10:37,728 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 12 [2020-10-29 09:10:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:37,729 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-10-29 09:10:37,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:10:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-10-29 09:10:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:10:37,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:37,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:37,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:10:37,731 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:37,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1634639351, now seen corresponding path program 1 times [2020-10-29 09:10:37,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:37,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895182634] [2020-10-29 09:10:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:38,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:38,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:10:38,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:38,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 09:10:38,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:38,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:10:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:38,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:38,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:38,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:38,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:38,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:10:38,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:38,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:38,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895182634] [2020-10-29 09:10:38,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:38,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:10:38,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108010315] [2020-10-29 09:10:38,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:38,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:38,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:38,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:38,139 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2020-10-29 09:10:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:38,371 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-10-29 09:10:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:10:38,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-29 09:10:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:38,374 INFO L225 Difference]: With dead ends: 56 [2020-10-29 09:10:38,374 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:10:38,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:10:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-10-29 09:10:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 09:10:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-29 09:10:38,385 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 16 [2020-10-29 09:10:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:38,386 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-29 09:10:38,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2020-10-29 09:10:38,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:10:38,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:38,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:38,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:10:38,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:38,389 INFO L82 PathProgramCache]: Analyzing trace with hash -94271402, now seen corresponding path program 1 times [2020-10-29 09:10:38,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:38,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551604392] [2020-10-29 09:10:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:38,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:38,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:10:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 09:10:38,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:38,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:10:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:38,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:38,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:38,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:10:38,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:38,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:38,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551604392] [2020-10-29 09:10:38,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:38,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:10:38,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612112914] [2020-10-29 09:10:38,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:38,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:38,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:38,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:38,782 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 6 states. [2020-10-29 09:10:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:39,018 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-10-29 09:10:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:10:39,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-29 09:10:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:39,020 INFO L225 Difference]: With dead ends: 56 [2020-10-29 09:10:39,020 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:10:39,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:10:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 09:10:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:10:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-10-29 09:10:39,029 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 19 [2020-10-29 09:10:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:39,030 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-29 09:10:39,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-10-29 09:10:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:10:39,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:39,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:39,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:10:39,032 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:39,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1866610220, now seen corresponding path program 1 times [2020-10-29 09:10:39,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:39,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591950834] [2020-10-29 09:10:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:39,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:10:39,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 09:10:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:39,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:10:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:39,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:10:39,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:10:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:39,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:39,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:39,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:39,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:10:39,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591950834] [2020-10-29 09:10:39,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:39,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:10:39,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293351402] [2020-10-29 09:10:39,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:10:39,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:39,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:10:39,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:10:39,432 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2020-10-29 09:10:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:39,525 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2020-10-29 09:10:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:10:39,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-29 09:10:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:39,528 INFO L225 Difference]: With dead ends: 100 [2020-10-29 09:10:39,528 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 09:10:39,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:10:39,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 09:10:39,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2020-10-29 09:10:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 09:10:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-29 09:10:39,540 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 22 [2020-10-29 09:10:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:39,540 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-29 09:10:39,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:10:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-29 09:10:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:10:39,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:39,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:39,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:10:39,542 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1259149770, now seen corresponding path program 1 times [2020-10-29 09:10:39,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:39,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181696455] [2020-10-29 09:10:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:39,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:10:39,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-29 09:10:39,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:39,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:10:39,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:10:40,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:40,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:40,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181696455] [2020-10-29 09:10:40,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:40,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:10:40,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931550872] [2020-10-29 09:10:40,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:10:40,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:40,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:10:40,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:10:40,107 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 7 states. [2020-10-29 09:10:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:40,297 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-29 09:10:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:10:40,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-29 09:10:40,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:40,299 INFO L225 Difference]: With dead ends: 65 [2020-10-29 09:10:40,299 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 09:10:40,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 09:10:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2020-10-29 09:10:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 09:10:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-29 09:10:40,314 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 23 [2020-10-29 09:10:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:40,315 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-29 09:10:40,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:10:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-29 09:10:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:10:40,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:40,316 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:40,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:10:40,316 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:40,317 INFO L82 PathProgramCache]: Analyzing trace with hash -136050517, now seen corresponding path program 1 times [2020-10-29 09:10:40,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:40,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858623843] [2020-10-29 09:10:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:40,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:10:40,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:40,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 09:10:40,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:40,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:10:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:41,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:41,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:41,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:41,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:10:41,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:41,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:41,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:41,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858623843] [2020-10-29 09:10:41,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:41,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:41,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506214646] [2020-10-29 09:10:41,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:41,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:41,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:41,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:41,024 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 8 states. [2020-10-29 09:10:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:41,383 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-10-29 09:10:41,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:41,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-29 09:10:41,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:41,385 INFO L225 Difference]: With dead ends: 72 [2020-10-29 09:10:41,386 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 09:10:41,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 09:10:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-10-29 09:10:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 09:10:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-29 09:10:41,401 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 25 [2020-10-29 09:10:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:41,401 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-29 09:10:41,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-29 09:10:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:10:41,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:41,407 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:10:41,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:10:41,408 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:41,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1357886756, now seen corresponding path program 1 times [2020-10-29 09:10:41,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:41,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715213120] [2020-10-29 09:10:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:42,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:10:42,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-29 09:10:42,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:42,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:10:42,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:42,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:42,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:42,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:10:42,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:42,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:42,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715213120] [2020-10-29 09:10:42,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:42,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:10:42,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063842498] [2020-10-29 09:10:42,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:10:42,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:42,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:10:42,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:42,601 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 9 states. [2020-10-29 09:10:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:43,000 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2020-10-29 09:10:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:10:43,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-29 09:10:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:43,002 INFO L225 Difference]: With dead ends: 90 [2020-10-29 09:10:43,002 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 09:10:43,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:10:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 09:10:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2020-10-29 09:10:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 09:10:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-10-29 09:10:43,025 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 29 [2020-10-29 09:10:43,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:43,026 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-10-29 09:10:43,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:10:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-10-29 09:10:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:10:43,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:43,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:10:43,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:10:43,032 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:43,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1964623457, now seen corresponding path program 1 times [2020-10-29 09:10:43,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:43,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576447244] [2020-10-29 09:10:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:43,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:44,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:44,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:10:44,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:10:44,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-29 09:10:44,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:44,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:10:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:44,726 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2020-10-29 09:10:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:44,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:44,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:44,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:44,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:44,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:44,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:44,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:44,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:44,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576447244] [2020-10-29 09:10:44,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:44,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:44,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604114559] [2020-10-29 09:10:44,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:44,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:44,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:44,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:44,875 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 8 states. [2020-10-29 09:10:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:45,352 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2020-10-29 09:10:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:10:45,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-29 09:10:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:45,354 INFO L225 Difference]: With dead ends: 101 [2020-10-29 09:10:45,354 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 09:10:45,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:45,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 09:10:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-10-29 09:10:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 09:10:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2020-10-29 09:10:45,371 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 32 [2020-10-29 09:10:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:45,372 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2020-10-29 09:10:45,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2020-10-29 09:10:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:10:45,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:45,373 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:10:45,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:10:45,374 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:45,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:45,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1192796396, now seen corresponding path program 1 times [2020-10-29 09:10:45,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:45,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835760278] [2020-10-29 09:10:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:45,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:45,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:10:45,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-29 09:10:45,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:45,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:10:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:10:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:46,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:46,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:46,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:46,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:46,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:46,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835760278] [2020-10-29 09:10:46,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:46,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:10:46,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159708203] [2020-10-29 09:10:46,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:10:46,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:46,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:10:46,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:46,255 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand 11 states. [2020-10-29 09:10:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:46,764 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions. [2020-10-29 09:10:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:10:46,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-29 09:10:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:46,766 INFO L225 Difference]: With dead ends: 113 [2020-10-29 09:10:46,766 INFO L226 Difference]: Without dead ends: 109 [2020-10-29 09:10:46,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-29 09:10:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 89. [2020-10-29 09:10:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 09:10:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2020-10-29 09:10:46,778 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 32 [2020-10-29 09:10:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:46,778 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2020-10-29 09:10:46,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:10:46,778 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2020-10-29 09:10:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:10:46,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:46,780 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:10:46,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:10:46,780 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:46,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1641525181, now seen corresponding path program 1 times [2020-10-29 09:10:46,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:46,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941127481] [2020-10-29 09:10:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:46,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:48,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:48,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:10:48,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:10:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-29 09:10:48,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:48,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:10:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:10:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:48,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:48,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:48,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:48,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:48,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941127481] [2020-10-29 09:10:48,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:48,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:10:48,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381760825] [2020-10-29 09:10:48,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:10:48,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:48,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:10:48,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:48,487 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 9 states. [2020-10-29 09:10:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:48,796 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2020-10-29 09:10:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:10:48,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-29 09:10:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:48,798 INFO L225 Difference]: With dead ends: 110 [2020-10-29 09:10:48,798 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 09:10:48,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 09:10:48,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-29 09:10:48,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 09:10:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-10-29 09:10:48,809 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 33 [2020-10-29 09:10:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:48,809 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-10-29 09:10:48,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:10:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-10-29 09:10:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:48,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:48,810 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:48,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:10:48,811 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:48,811 INFO L82 PathProgramCache]: Analyzing trace with hash -394414092, now seen corresponding path program 1 times [2020-10-29 09:10:48,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:48,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547425493] [2020-10-29 09:10:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:49,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:49,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:49,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:49,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-29 09:10:49,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:49,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:10:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:10:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:49,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:49,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:49,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:49,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:49,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:49,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:49,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547425493] [2020-10-29 09:10:49,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:49,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:10:49,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071589108] [2020-10-29 09:10:49,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:10:49,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:49,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:10:49,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:49,937 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 11 states. [2020-10-29 09:10:50,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:50,351 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2020-10-29 09:10:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:10:50,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 09:10:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:50,352 INFO L225 Difference]: With dead ends: 99 [2020-10-29 09:10:50,352 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 09:10:50,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:10:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 09:10:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 72. [2020-10-29 09:10:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 09:10:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-10-29 09:10:50,364 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 34 [2020-10-29 09:10:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:50,365 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-10-29 09:10:50,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:10:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-10-29 09:10:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:10:50,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:50,366 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:10:50,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:10:50,366 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:50,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:50,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1656647879, now seen corresponding path program 1 times [2020-10-29 09:10:50,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:50,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197807138] [2020-10-29 09:10:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:10:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-29 09:10:50,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:50,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:10:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:10:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:51,440 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-29 09:10:51,571 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-29 09:10:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:51,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:51,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:51,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:51,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:51,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:51,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:51,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197807138] [2020-10-29 09:10:51,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:51,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:10:51,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320145809] [2020-10-29 09:10:51,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:10:51,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:51,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:10:51,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:10:51,809 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 12 states. [2020-10-29 09:10:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:52,322 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2020-10-29 09:10:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:10:52,322 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-29 09:10:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:52,324 INFO L225 Difference]: With dead ends: 127 [2020-10-29 09:10:52,324 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 09:10:52,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 09:10:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 80. [2020-10-29 09:10:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 09:10:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-10-29 09:10:52,338 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 35 [2020-10-29 09:10:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:52,339 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-10-29 09:10:52,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:10:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-10-29 09:10:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:10:52,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:52,344 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:10:52,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:10:52,347 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:52,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:52,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2095017233, now seen corresponding path program 2 times [2020-10-29 09:10:52,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:52,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365019296] [2020-10-29 09:10:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:53,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:53,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:10:53,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-29 09:10:53,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:53,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:10:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:10:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:53,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:53,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:53,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:53,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:53,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365019296] [2020-10-29 09:10:53,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:53,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:10:53,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610276179] [2020-10-29 09:10:53,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:10:53,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:10:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:53,812 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 11 states. [2020-10-29 09:10:54,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:54,332 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2020-10-29 09:10:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:10:54,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-29 09:10:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:54,334 INFO L225 Difference]: With dead ends: 124 [2020-10-29 09:10:54,334 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 09:10:54,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:10:54,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 09:10:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2020-10-29 09:10:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 09:10:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-10-29 09:10:54,348 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 35 [2020-10-29 09:10:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:54,348 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-10-29 09:10:54,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:10:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-10-29 09:10:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:10:54,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:54,350 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] [2020-10-29 09:10:54,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:10:54,350 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:54,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1554389638, now seen corresponding path program 1 times [2020-10-29 09:10:54,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:54,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966832443] [2020-10-29 09:10:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:54,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:54,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:10:54,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-29 09:10:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:54,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:10:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:10:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:55,052 ERROR L253 erpolLogProxyWrapper]: Interpolant 28 not inductive [2020-10-29 09:10:55,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:10:55,053 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-29 09:10:55,061 INFO L168 Benchmark]: Toolchain (without parser) took 20321.15 ms. Allocated memory was 156.2 MB in the beginning and 348.1 MB in the end (delta: 191.9 MB). Free memory was 129.7 MB in the beginning and 311.0 MB in the end (delta: -181.3 MB). Peak memory consumption was 203.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:55,062 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:10:55,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.46 ms. Allocated memory is still 156.2 MB. Free memory was 129.0 MB in the beginning and 106.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:55,064 INFO L168 Benchmark]: Boogie Preprocessor took 73.41 ms. Allocated memory is still 156.2 MB. Free memory was 106.9 MB in the beginning and 104.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:55,068 INFO L168 Benchmark]: RCFGBuilder took 980.34 ms. Allocated memory is still 156.2 MB. Free memory was 104.2 MB in the beginning and 134.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:55,076 INFO L168 Benchmark]: TraceAbstraction took 18548.65 ms. Allocated memory was 156.2 MB in the beginning and 348.1 MB in the end (delta: 191.9 MB). Free memory was 134.9 MB in the beginning and 311.0 MB in the end (delta: -176.1 MB). Peak memory consumption was 207.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:55,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 702.46 ms. Allocated memory is still 156.2 MB. Free memory was 129.0 MB in the beginning and 106.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.41 ms. Allocated memory is still 156.2 MB. Free memory was 106.9 MB in the beginning and 104.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 980.34 ms. Allocated memory is still 156.2 MB. Free memory was 104.2 MB in the beginning and 134.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18548.65 ms. Allocated memory was 156.2 MB in the beginning and 348.1 MB in the end (delta: 191.9 MB). Free memory was 134.9 MB in the beginning and 311.0 MB in the end (delta: -176.1 MB). Peak memory consumption was 207.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...