/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:58:48,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:48,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:48,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:48,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:48,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:48,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:48,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:48,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:48,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:48,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:48,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:48,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:48,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:48,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:48,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:48,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:48,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:48,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:48,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:48,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:48,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:48,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:48,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:48,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:48,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:48,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:48,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:48,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:48,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:58:48,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:58:48,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:58:48,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:58:48,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:58:48,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:58:48,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:58:48,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:58:48,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:58:48,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:48,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:48,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:48,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:58:48,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:48,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:48,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:48,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:48,258 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:48,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:48,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:48,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:48,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:48,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:48,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:48,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:48,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:48,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:48,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:48,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:48,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:48,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:48,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:48,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:48,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:48,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:48,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:48,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:48,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:48,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:48,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:48,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:48,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:48,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:58:48,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:48,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:48,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:48,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:48,750 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:48,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-25 00:58:48,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc8c09d0/d13382333d5346b8ad5bdedab5f5962a/FLAG05b186dfd [2020-09-25 00:58:49,551 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:49,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-25 00:58:49,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc8c09d0/d13382333d5346b8ad5bdedab5f5962a/FLAG05b186dfd [2020-09-25 00:58:49,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc8c09d0/d13382333d5346b8ad5bdedab5f5962a [2020-09-25 00:58:49,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:49,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:49,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:49,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:49,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:49,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742d25d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49, skipping insertion in model container [2020-09-25 00:58:49,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:49,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:50,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:50,354 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:50,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:50,455 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:50,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50 WrapperNode [2020-09-25 00:58:50,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:50,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:50,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:50,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:50,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (1/1) ... [2020-09-25 00:58:50,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (1/1) ... [2020-09-25 00:58:50,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (1/1) ... [2020-09-25 00:58:50,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (1/1) ... [2020-09-25 00:58:50,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (1/1) ... [2020-09-25 00:58:50,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (1/1) ... [2020-09-25 00:58:50,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (1/1) ... [2020-09-25 00:58:50,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:50,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:50,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:50,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:50,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:50,616 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:58:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:58:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:58:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:58:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:58:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:58:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:58:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:58:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:58:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:58:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:58:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:58:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:58:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:58:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:58:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:58:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:58:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:58:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:58:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:58:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:58:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:58:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:58:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:58:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:58:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:58:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:58:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:58:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:58:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:58:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:58:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:58:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:58:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:58:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:58:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:58:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:58:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:58:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:58:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:58:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:58:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:58:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:58:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:58:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:58:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:58:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:58:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:58:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:58:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:58:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:58:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:58:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:58:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:58:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 00:58:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:58:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:58:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:58:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:58:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:58:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:58:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:58:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:58:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:58:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:58:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:58:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:58:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:58:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:58:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:58:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:58:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:58:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:58:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:58:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:58:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:58:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:58:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:58:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:58:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:58:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:58:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:58:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:58:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:58:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:58:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:58:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:58:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:58:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:58:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:58:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:58:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:58:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:58:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:58:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:58:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:58:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:58:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:58:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:58:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:58:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:58:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:58:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:58:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:58:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:58:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:58:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:58:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:58:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:58:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:51,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:51,246 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-25 00:58:51,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:51 BoogieIcfgContainer [2020-09-25 00:58:51,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:51,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:51,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:51,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:51,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:49" (1/3) ... [2020-09-25 00:58:51,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297fb249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:51, skipping insertion in model container [2020-09-25 00:58:51,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:50" (2/3) ... [2020-09-25 00:58:51,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297fb249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:51, skipping insertion in model container [2020-09-25 00:58:51,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:51" (3/3) ... [2020-09-25 00:58:51,273 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-09-25 00:58:51,285 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:51,296 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 00:58:51,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 00:58:51,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:51,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:51,347 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:51,347 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:51,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:51,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:51,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:51,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-09-25 00:58:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 00:58:51,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:51,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:51,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:51,387 INFO L82 PathProgramCache]: Analyzing trace with hash -976698803, now seen corresponding path program 1 times [2020-09-25 00:58:51,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:51,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445376476] [2020-09-25 00:58:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 00:58:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:52,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-09-25 00:58:52,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:58:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:58:52,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:52,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:52,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 00:58:52,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:52,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445376476] [2020-09-25 00:58:52,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:52,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:58:52,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676573660] [2020-09-25 00:58:52,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:58:52,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:52,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:58:52,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:58:52,424 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2020-09-25 00:58:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:52,694 INFO L93 Difference]: Finished difference Result 173 states and 209 transitions. [2020-09-25 00:58:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:58:52,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-25 00:58:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:52,710 INFO L225 Difference]: With dead ends: 173 [2020-09-25 00:58:52,710 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 00:58:52,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:58:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 00:58:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 00:58:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 00:58:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-09-25 00:58:52,770 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 20 [2020-09-25 00:58:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:52,770 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-09-25 00:58:52,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:58:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-09-25 00:58:52,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 00:58:52,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:52,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:52,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:58:52,772 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:52,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1430822134, now seen corresponding path program 1 times [2020-09-25 00:58:52,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:52,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930641169] [2020-09-25 00:58:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:53,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:53,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:58:53,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 00:58:53,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:58:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:58:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:58:53,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:53,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:53,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:53,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:53,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:58:53,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:53,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930641169] [2020-09-25 00:58:53,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:53,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 00:58:53,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376755827] [2020-09-25 00:58:53,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:58:53,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:53,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:58:53,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:58:53,276 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 9 states. [2020-09-25 00:58:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:53,679 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2020-09-25 00:58:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:58:53,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-25 00:58:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:53,682 INFO L225 Difference]: With dead ends: 149 [2020-09-25 00:58:53,683 INFO L226 Difference]: Without dead ends: 147 [2020-09-25 00:58:53,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:58:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-25 00:58:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 82. [2020-09-25 00:58:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 00:58:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-09-25 00:58:53,698 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 22 [2020-09-25 00:58:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:53,698 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-09-25 00:58:53,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:58:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-09-25 00:58:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 00:58:53,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:53,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:53,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:58:53,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:53,701 INFO L82 PathProgramCache]: Analyzing trace with hash 340604940, now seen corresponding path program 1 times [2020-09-25 00:58:53,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:53,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67857443] [2020-09-25 00:58:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:53,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:53,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:58:53,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 00:58:53,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:58:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:58:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:58:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:54,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:54,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:54,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:58:54,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:54,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:54,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67857443] [2020-09-25 00:58:54,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:54,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:58:54,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330471347] [2020-09-25 00:58:54,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:58:54,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:54,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:58:54,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:58:54,084 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 7 states. [2020-09-25 00:58:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:54,685 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-09-25 00:58:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:58:54,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-25 00:58:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:54,689 INFO L225 Difference]: With dead ends: 118 [2020-09-25 00:58:54,690 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 00:58:54,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:58:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 00:58:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-09-25 00:58:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 00:58:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-09-25 00:58:54,718 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 28 [2020-09-25 00:58:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:54,719 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-09-25 00:58:54,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:58:54,722 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-09-25 00:58:54,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:58:54,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:54,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:54,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:58:54,726 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1933129776, now seen corresponding path program 1 times [2020-09-25 00:58:54,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:54,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933616812] [2020-09-25 00:58:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:54,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:55,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:56,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:58:56,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:58:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2055 [2020-09-25 00:58:56,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:58:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:58:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:56,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:56,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:56,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:58:56,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:56,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933616812] [2020-09-25 00:58:56,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:56,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:58:56,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904270704] [2020-09-25 00:58:56,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:58:56,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:56,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:58:56,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:56,876 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 4 states. [2020-09-25 00:58:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:57,043 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2020-09-25 00:58:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:58:57,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-25 00:58:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:57,045 INFO L225 Difference]: With dead ends: 195 [2020-09-25 00:58:57,045 INFO L226 Difference]: Without dead ends: 136 [2020-09-25 00:58:57,046 INFO L675 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 [2020-09-25 00:58:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-25 00:58:57,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-09-25 00:58:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-25 00:58:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-09-25 00:58:57,056 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 33 [2020-09-25 00:58:57,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:57,057 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-09-25 00:58:57,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:58:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-09-25 00:58:57,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 00:58:57,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:57,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:57,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:58:57,059 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1127481847, now seen corresponding path program 1 times [2020-09-25 00:58:57,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:57,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21252262] [2020-09-25 00:58:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:57,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:59,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 00:58:59,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:58:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2360 [2020-09-25 00:58:59,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:58:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:58:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 00:58:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:59,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:59,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:59,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:58:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:59,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21252262] [2020-09-25 00:58:59,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:59,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 00:58:59,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401871466] [2020-09-25 00:58:59,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:58:59,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:59,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:58:59,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:58:59,731 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 12 states. [2020-09-25 00:59:00,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:00,523 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2020-09-25 00:59:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:59:00,524 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 00:59:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:00,526 INFO L225 Difference]: With dead ends: 190 [2020-09-25 00:59:00,527 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 00:59:00,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-09-25 00:59:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 00:59:00,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 105. [2020-09-25 00:59:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 00:59:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-09-25 00:59:00,562 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 37 [2020-09-25 00:59:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:00,563 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-09-25 00:59:00,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:59:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-09-25 00:59:00,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 00:59:00,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:00,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:59:00,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:59:00,568 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:00,569 INFO L82 PathProgramCache]: Analyzing trace with hash 821991267, now seen corresponding path program 1 times [2020-09-25 00:59:00,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:00,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301591762] [2020-09-25 00:59:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:02,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 00:59:02,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:02,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1726 [2020-09-25 00:59:02,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:59:02,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:59:02,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:59:02,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:02,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:59:02,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:02,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:02,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301591762] [2020-09-25 00:59:02,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:02,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 00:59:02,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466113471] [2020-09-25 00:59:02,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:59:02,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:02,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:59:02,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:59:02,683 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 14 states. [2020-09-25 00:59:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:03,483 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2020-09-25 00:59:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 00:59:03,484 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-09-25 00:59:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:03,486 INFO L225 Difference]: With dead ends: 192 [2020-09-25 00:59:03,486 INFO L226 Difference]: Without dead ends: 190 [2020-09-25 00:59:03,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=269, Invalid=661, Unknown=0, NotChecked=0, Total=930 [2020-09-25 00:59:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-25 00:59:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 103. [2020-09-25 00:59:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 00:59:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-09-25 00:59:03,509 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 37 [2020-09-25 00:59:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:03,510 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-09-25 00:59:03,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:59:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-09-25 00:59:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 00:59:03,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:03,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:59:03,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:59:03,513 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1168005107, now seen corresponding path program 1 times [2020-09-25 00:59:03,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:03,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34794660] [2020-09-25 00:59:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:59:03,541 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:59:03,541 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:59:03,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:59:03,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:59:03 BoogieIcfgContainer [2020-09-25 00:59:03,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:59:03,580 INFO L168 Benchmark]: Toolchain (without parser) took 13816.97 ms. Allocated memory was 140.0 MB in the beginning and 309.9 MB in the end (delta: 169.9 MB). Free memory was 102.6 MB in the beginning and 98.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,581 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.34 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 170.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,589 INFO L168 Benchmark]: Boogie Preprocessor took 74.65 ms. Allocated memory is still 202.4 MB. Free memory was 169.3 MB in the beginning and 166.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,590 INFO L168 Benchmark]: RCFGBuilder took 724.98 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 117.6 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,591 INFO L168 Benchmark]: TraceAbstraction took 12316.76 ms. Allocated memory was 202.4 MB in the beginning and 309.9 MB in the end (delta: 107.5 MB). Free memory was 116.9 MB in the beginning and 98.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 125.9 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,603 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 690.34 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 170.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.65 ms. Allocated memory is still 202.4 MB. Free memory was 169.3 MB in the beginning and 166.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 724.98 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 117.6 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12316.76 ms. Allocated memory was 202.4 MB in the beginning and 309.9 MB in the end (delta: 107.5 MB). Free memory was 116.9 MB in the beginning and 98.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 125.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = head [L987] head->data = 0 [L989] SLL* x = head; [L990] int state = 1; [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] x->data = state [L1016] EXPR head->next [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND TRUE x->data != 0 [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] EXPR x->data [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.2s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 494 SDtfs, 1178 SDslu, 1553 SDs, 0 SdLazy, 1060 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 282 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 34908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...