/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:01,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:01,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:01,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:01,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:01,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:01,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:01,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:01,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:01,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:01,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:01,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:01,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:01,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:01,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:01,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:01,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:01,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:01,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:01,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:01,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:01,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:01,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:01,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:01,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:01,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:01,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:01,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:01,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:01,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:01,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:01,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:01,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:01,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:01,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:01,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:01,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:01,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:01,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:01,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:01,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:01,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:59:01,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:01,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:01,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:01,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:01,663 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:01,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:01,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:01,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:01,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:01,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:01,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:01,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:01,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:01,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:01,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:01,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:01,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:01,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:01,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:01,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:01,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:01,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:01,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:01,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:01,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:01,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:01,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:01,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:01,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:01,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:02,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:02,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:02,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:02,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:02,229 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:02,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 08:59:02,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/075fb60fa/691b80dfc08c45ab9ced3bbf3ac46034/FLAGed2d1e813 [2020-09-25 08:59:02,970 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:02,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 08:59:02,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/075fb60fa/691b80dfc08c45ab9ced3bbf3ac46034/FLAGed2d1e813 [2020-09-25 08:59:03,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/075fb60fa/691b80dfc08c45ab9ced3bbf3ac46034 [2020-09-25 08:59:03,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:03,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:03,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:03,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:03,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:03,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03, skipping insertion in model container [2020-09-25 08:59:03,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:03,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:03,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:03,907 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:03,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:04,015 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:04,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04 WrapperNode [2020-09-25 08:59:04,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:04,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:04,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:04,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:04,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (1/1) ... [2020-09-25 08:59:04,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (1/1) ... [2020-09-25 08:59:04,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (1/1) ... [2020-09-25 08:59:04,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (1/1) ... [2020-09-25 08:59:04,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (1/1) ... [2020-09-25 08:59:04,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (1/1) ... [2020-09-25 08:59:04,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (1/1) ... [2020-09-25 08:59:04,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:04,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:04,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:04,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:04,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:04,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:04,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:04,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 08:59:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 08:59:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 08:59:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 08:59:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 08:59:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 08:59:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 08:59:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 08:59:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 08:59:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 08:59:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 08:59:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 08:59:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 08:59:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 08:59:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 08:59:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 08:59:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 08:59:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 08:59:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 08:59:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 08:59:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 08:59:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 08:59:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 08:59:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 08:59:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 08:59:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 08:59:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 08:59:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 08:59:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 08:59:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 08:59:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 08:59:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 08:59:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 08:59:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 08:59:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 08:59:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 08:59:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 08:59:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 08:59:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 08:59:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 08:59:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 08:59:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 08:59:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 08:59:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 08:59:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 08:59:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 08:59:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 08:59:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 08:59:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 08:59:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 08:59:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:59:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:59:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 08:59:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:59:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 08:59:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 08:59:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 08:59:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 08:59:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 08:59:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:59:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 08:59:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 08:59:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 08:59:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 08:59:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 08:59:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 08:59:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 08:59:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 08:59:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 08:59:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 08:59:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 08:59:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 08:59:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 08:59:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 08:59:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 08:59:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 08:59:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 08:59:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 08:59:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 08:59:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 08:59:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 08:59:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 08:59:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 08:59:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 08:59:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 08:59:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 08:59:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 08:59:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 08:59:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 08:59:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 08:59:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 08:59:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 08:59:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 08:59:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 08:59:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 08:59:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 08:59:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 08:59:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 08:59:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 08:59:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 08:59:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 08:59:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 08:59:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:59:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:59:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:59:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:59:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:59:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:59:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:04,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:04,997 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 08:59:05,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:05 BoogieIcfgContainer [2020-09-25 08:59:05,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:05,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:05,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:05,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:05,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:03" (1/3) ... [2020-09-25 08:59:05,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0e1f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:05, skipping insertion in model container [2020-09-25 08:59:05,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:04" (2/3) ... [2020-09-25 08:59:05,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0e1f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:05, skipping insertion in model container [2020-09-25 08:59:05,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:05" (3/3) ... [2020-09-25 08:59:05,015 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-25 08:59:05,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:05,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 08:59:05,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 08:59:05,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:05,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:05,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:05,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:05,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:05,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:05,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:05,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-25 08:59:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 08:59:05,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:05,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:05,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:05,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:05,151 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-25 08:59:05,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:05,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797621925] [2020-09-25 08:59:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:05,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:05,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:59:05,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-25 08:59:05,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:05,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:59:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:05,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:59:05,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:05,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:05,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:05,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:59:05,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:05,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:05,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797621925] [2020-09-25 08:59:05,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:05,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:59:05,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472225909] [2020-09-25 08:59:05,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:59:05,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:05,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:59:05,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:59:05,835 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-09-25 08:59:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:06,243 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2020-09-25 08:59:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:59:06,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-25 08:59:06,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:06,268 INFO L225 Difference]: With dead ends: 277 [2020-09-25 08:59:06,268 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 08:59:06,278 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 08:59:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 08:59:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-25 08:59:06,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 08:59:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-09-25 08:59:06,369 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 18 [2020-09-25 08:59:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:06,370 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-09-25 08:59:06,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:59:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-09-25 08:59:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 08:59:06,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:06,373 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 08:59:06,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:06,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:06,374 INFO L82 PathProgramCache]: Analyzing trace with hash 626661666, now seen corresponding path program 1 times [2020-09-25 08:59:06,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:06,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660359904] [2020-09-25 08:59:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:06,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:06,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:06,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:59:06,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 08:59:06,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:06,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:59:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:06,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:06,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:06,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:06,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:59:06,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:06,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:06,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:06,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:06,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:06,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660359904] [2020-09-25 08:59:06,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:06,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:59:06,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079074173] [2020-09-25 08:59:06,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:59:06,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:06,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:59:06,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:06,782 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 6 states. [2020-09-25 08:59:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:07,274 INFO L93 Difference]: Finished difference Result 248 states and 266 transitions. [2020-09-25 08:59:07,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:59:07,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-25 08:59:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:07,280 INFO L225 Difference]: With dead ends: 248 [2020-09-25 08:59:07,280 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 08:59:07,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:59:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 08:59:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 142. [2020-09-25 08:59:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-25 08:59:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-09-25 08:59:07,314 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 20 [2020-09-25 08:59:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:07,314 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-09-25 08:59:07,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:59:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-09-25 08:59:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 08:59:07,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:07,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:07,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:59:07,318 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:07,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1753263237, now seen corresponding path program 1 times [2020-09-25 08:59:07,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:07,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933625261] [2020-09-25 08:59:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:07,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:07,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 08:59:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:59:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2836 [2020-09-25 08:59:10,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:10,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:59:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:59:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:10,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:10,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:10,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:59:10,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:10,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:10,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933625261] [2020-09-25 08:59:10,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:10,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:10,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622386580] [2020-09-25 08:59:10,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:10,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:10,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:10,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:10,230 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 4 states. [2020-09-25 08:59:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:10,463 INFO L93 Difference]: Finished difference Result 291 states and 314 transitions. [2020-09-25 08:59:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:59:10,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 08:59:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:10,466 INFO L225 Difference]: With dead ends: 291 [2020-09-25 08:59:10,466 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 08:59:10,468 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 08:59:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 08:59:10,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 158. [2020-09-25 08:59:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 08:59:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-09-25 08:59:10,481 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 43 [2020-09-25 08:59:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:10,481 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-09-25 08:59:10,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-09-25 08:59:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 08:59:10,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:10,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:10,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:59:10,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:10,485 INFO L82 PathProgramCache]: Analyzing trace with hash 24683595, now seen corresponding path program 1 times [2020-09-25 08:59:10,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:10,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182711621] [2020-09-25 08:59:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:10,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:15,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:59:15,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 08:59:15,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:15,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 08:59:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:59:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:15,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:59:15,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:15,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:59:15,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182711621] [2020-09-25 08:59:15,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:15,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:15,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376588883] [2020-09-25 08:59:15,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:15,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:15,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:15,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:15,631 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 4 states. [2020-09-25 08:59:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:15,961 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2020-09-25 08:59:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:59:15,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-25 08:59:15,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:15,968 INFO L225 Difference]: With dead ends: 244 [2020-09-25 08:59:15,968 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 08:59:15,969 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 08:59:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 08:59:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-09-25 08:59:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 08:59:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-09-25 08:59:15,994 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 61 [2020-09-25 08:59:15,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:15,994 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-09-25 08:59:15,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:15,995 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-09-25 08:59:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 08:59:16,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:16,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:16,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:59:16,005 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:16,006 INFO L82 PathProgramCache]: Analyzing trace with hash -158274674, now seen corresponding path program 1 times [2020-09-25 08:59:16,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:16,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875823075] [2020-09-25 08:59:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:16,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:20,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:20,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 08:59:20,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:59:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4171 [2020-09-25 08:59:20,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:20,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 08:59:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:59:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:20,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:20,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:20,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:20,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:20,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:59:20,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:20,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:20,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:20,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:59:20,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875823075] [2020-09-25 08:59:20,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:20,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:59:20,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204608752] [2020-09-25 08:59:20,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:59:20,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:20,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:59:20,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:59:20,429 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 8 states. [2020-09-25 08:59:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:20,924 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-09-25 08:59:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:59:20,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 08:59:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:20,926 INFO L225 Difference]: With dead ends: 271 [2020-09-25 08:59:20,926 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 08:59:20,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:59:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 08:59:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2020-09-25 08:59:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 08:59:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 179 transitions. [2020-09-25 08:59:20,935 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 179 transitions. Word has length 63 [2020-09-25 08:59:20,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:20,936 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 179 transitions. [2020-09-25 08:59:20,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:59:20,936 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 179 transitions. [2020-09-25 08:59:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 08:59:20,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:20,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:20,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:59:20,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:20,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-25 08:59:20,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:20,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178257947] [2020-09-25 08:59:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:59:20,967 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:59:20,967 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:59:20,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:59:20,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:59:20 BoogieIcfgContainer [2020-09-25 08:59:20,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:59:21,000 INFO L168 Benchmark]: Toolchain (without parser) took 17745.53 ms. Allocated memory was 147.8 MB in the beginning and 364.4 MB in the end (delta: 216.5 MB). Free memory was 101.4 MB in the beginning and 241.3 MB in the end (delta: -139.9 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:59:21,001 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:59:21,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.16 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:59:21,003 INFO L168 Benchmark]: Boogie Preprocessor took 83.38 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 167.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:59:21,004 INFO L168 Benchmark]: RCFGBuilder took 903.46 ms. Allocated memory is still 205.0 MB. Free memory was 167.8 MB in the beginning and 107.2 MB in the end (delta: 60.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:59:21,005 INFO L168 Benchmark]: TraceAbstraction took 15990.65 ms. Allocated memory was 205.0 MB in the beginning and 364.4 MB in the end (delta: 159.4 MB). Free memory was 107.2 MB in the beginning and 241.3 MB in the end (delta: -134.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:59:21,009 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 758.16 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.38 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 167.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 903.46 ms. Allocated memory is still 205.0 MB. Free memory was 167.8 MB in the beginning and 107.2 MB in the end (delta: 60.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15990.65 ms. Allocated memory was 205.0 MB in the beginning and 364.4 MB in the end (delta: 159.4 MB). Free memory was 107.2 MB in the beginning and 241.3 MB in the end (delta: -134.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.8s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 727 SDtfs, 801 SDslu, 800 SDs, 0 SdLazy, 993 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred 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, 5 MinimizatonAttempts, 127 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 26587 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 4/4 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...