/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 interpolation-heuristic=FIRST --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-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:01:54,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:54,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:54,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:54,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:54,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:54,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:54,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:54,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:54,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:54,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:54,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:54,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:54,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:54,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:54,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:54,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:54,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:54,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:54,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:54,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:54,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:54,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:54,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:54,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:54,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:54,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:54,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:54,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:54,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:54,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:54,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:54,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:54,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:54,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:54,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:54,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:54,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:54,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:54,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:54,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:54,976 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 [2020-09-24 16:01:55,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:55,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:55,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:55,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:55,033 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:55,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:55,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:55,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:55,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:55,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:55,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:55,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:55,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:55,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:55,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:55,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:55,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:55,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:55,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:55,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:55,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:55,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:55,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:55,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:55,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:55,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:55,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:55,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:55,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:55,040 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:55,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:55,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:55,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:55,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:55,592 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:55,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-09-24 16:01:55,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0812887ed/d4808d135ffd4a7ca588290b900bea75/FLAG3aaed36a0 [2020-09-24 16:01:56,330 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:56,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-09-24 16:01:56,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0812887ed/d4808d135ffd4a7ca588290b900bea75/FLAG3aaed36a0 [2020-09-24 16:01:56,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0812887ed/d4808d135ffd4a7ca588290b900bea75 [2020-09-24 16:01:56,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:56,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:56,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:56,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:56,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:56,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:56" (1/1) ... [2020-09-24 16:01:56,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4207e6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:56, skipping insertion in model container [2020-09-24 16:01:56,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:56" (1/1) ... [2020-09-24 16:01:56,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:56,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:57,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:57,154 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:57,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:57,293 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:57,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57 WrapperNode [2020-09-24 16:01:57,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:57,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:57,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:57,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:57,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (1/1) ... [2020-09-24 16:01:57,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (1/1) ... [2020-09-24 16:01:57,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (1/1) ... [2020-09-24 16:01:57,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (1/1) ... [2020-09-24 16:01:57,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (1/1) ... [2020-09-24 16:01:57,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (1/1) ... [2020-09-24 16:01:57,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (1/1) ... [2020-09-24 16:01:57,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:57,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:57,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:57,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:57,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (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 [2020-09-24 16:01:57,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:57,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:57,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:01:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:01:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:01:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:01:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:01:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:01:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:01:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:01:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:01:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:01:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:01:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:01:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:01:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:01:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:01:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:01:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:01:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:01:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:01:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:01:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:01:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:01:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:01:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:01:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:01:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:01:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:01:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:01:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:01:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:01:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:01:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:01:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:01:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:01:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:01:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:01:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:01:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:01:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:01:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:01:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:01:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:01:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:01:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:01:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:01:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:01:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:01:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:01:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:01:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:01:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:01:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:01:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:01:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:01:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:01:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:01:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:01:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:01:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:01:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:01:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:01:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:01:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:01:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:01:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:01:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:01:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:01:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:01:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:01:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:01:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:01:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:01:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:01:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:01:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:01:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:01:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:01:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:01:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:01:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:01:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:01:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:01:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:01:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:01:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:01:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:01:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:01:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:01:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:01:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:01:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:01:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:01:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:01:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:01:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:01:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:01:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:01:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:01:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:01:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:01:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:01:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:01:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:01:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:01:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:01:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:01:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:01:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:01:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:58,091 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:58,091 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-24 16:01:58,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:58 BoogieIcfgContainer [2020-09-24 16:01:58,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:58,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:58,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:58,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:58,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:56" (1/3) ... [2020-09-24 16:01:58,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422877e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:58, skipping insertion in model container [2020-09-24 16:01:58,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:57" (2/3) ... [2020-09-24 16:01:58,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422877e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:58, skipping insertion in model container [2020-09-24 16:01:58,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:58" (3/3) ... [2020-09-24 16:01:58,120 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-09-24 16:01:58,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:01:58,143 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-24 16:01:58,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-24 16:01:58,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:01:58,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:01:58,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:01:58,205 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:01:58,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:01:58,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:01:58,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:01:58,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:01:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-09-24 16:01:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 16:01:58,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:58,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:58,262 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:58,270 INFO L82 PathProgramCache]: Analyzing trace with hash -218973700, now seen corresponding path program 1 times [2020-09-24 16:01:58,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:58,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535845243] [2020-09-24 16:01:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:58,459 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:58,459 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:58,459 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:58,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 16:01:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:01:58,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 16:01:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:58,571 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:58,571 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:58,571 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:58,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:58,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:58,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535845243] [2020-09-24 16:01:58,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:58,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:01:58,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003141600] [2020-09-24 16:01:58,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:01:58,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:58,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:01:58,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:01:58,659 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 3 states. [2020-09-24 16:01:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:58,890 INFO L93 Difference]: Finished difference Result 156 states and 187 transitions. [2020-09-24 16:01:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:01:58,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-24 16:01:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:58,907 INFO L225 Difference]: With dead ends: 156 [2020-09-24 16:01:58,907 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 16:01:58,913 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 [2020-09-24 16:01:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 16:01:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-24 16:01:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 16:01:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-09-24 16:01:58,970 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 18 [2020-09-24 16:01:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:58,970 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-09-24 16:01:58,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:01:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-09-24 16:01:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 16:01:58,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:58,972 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] [2020-09-24 16:01:58,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:01:58,973 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:58,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1356448202, now seen corresponding path program 1 times [2020-09-24 16:01:58,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:58,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311513138] [2020-09-24 16:01:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:59,086 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:59,086 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:59,086 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:59,086 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:59,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 16:01:59,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 16:01:59,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:59,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:01:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 16:01:59,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:59,167 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:59,167 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:59,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:59,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:59,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:59,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:59,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:59,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:59,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311513138] [2020-09-24 16:01:59,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:59,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:01:59,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206767074] [2020-09-24 16:01:59,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:01:59,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:59,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:01:59,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:01:59,183 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 6 states. [2020-09-24 16:01:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:59,386 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-09-24 16:01:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:01:59,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-24 16:01:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:59,389 INFO L225 Difference]: With dead ends: 104 [2020-09-24 16:01:59,389 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 16:01:59,390 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 [2020-09-24 16:01:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 16:01:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2020-09-24 16:01:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 16:01:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-09-24 16:01:59,401 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 20 [2020-09-24 16:01:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:59,402 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-09-24 16:01:59,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:01:59,402 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-09-24 16:01:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 16:01:59,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:59,403 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] [2020-09-24 16:01:59,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:01:59,404 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:59,404 INFO L82 PathProgramCache]: Analyzing trace with hash 539652413, now seen corresponding path program 1 times [2020-09-24 16:01:59,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:59,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058563796] [2020-09-24 16:01:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:59,451 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:01:59,451 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-24 16:01:59,451 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-24 16:01:59,453 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:59,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 16:01:59,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 16:01:59,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:01:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 16:01:59,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:59,562 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:59,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:59,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:59,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:59,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:59,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058563796] [2020-09-24 16:01:59,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:59,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:01:59,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039514521] [2020-09-24 16:01:59,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:01:59,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:59,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:01:59,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:01:59,575 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 6 states. [2020-09-24 16:01:59,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:59,854 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2020-09-24 16:01:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 16:01:59,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 16:01:59,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:59,859 INFO L225 Difference]: With dead ends: 128 [2020-09-24 16:01:59,860 INFO L226 Difference]: Without dead ends: 125 [2020-09-24 16:01:59,861 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 [2020-09-24 16:01:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-24 16:01:59,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-09-24 16:01:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 16:01:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-09-24 16:01:59,894 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 24 [2020-09-24 16:01:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:59,895 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-09-24 16:01:59,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:01:59,895 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-09-24 16:01:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 16:01:59,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:59,897 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] [2020-09-24 16:01:59,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:01:59,898 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:59,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:59,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1498142901, now seen corresponding path program 1 times [2020-09-24 16:01:59,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:59,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200086998] [2020-09-24 16:01:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:01:59,932 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:01:59,932 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:01:59,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:01:59,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:01:59 BoogieIcfgContainer [2020-09-24 16:01:59,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:01:59,964 INFO L168 Benchmark]: Toolchain (without parser) took 3349.07 ms. Allocated memory was 142.1 MB in the beginning and 234.9 MB in the end (delta: 92.8 MB). Free memory was 104.1 MB in the beginning and 89.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 107.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:59,965 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:01:59,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.48 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 103.5 MB in the beginning and 171.3 MB in the end (delta: -67.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:59,967 INFO L168 Benchmark]: Boogie Preprocessor took 84.60 ms. Allocated memory is still 203.9 MB. Free memory was 171.3 MB in the beginning and 168.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:59,968 INFO L168 Benchmark]: RCFGBuilder took 723.09 ms. Allocated memory is still 203.9 MB. Free memory was 168.7 MB in the beginning and 117.0 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:59,969 INFO L168 Benchmark]: TraceAbstraction took 1853.74 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 116.3 MB in the beginning and 89.9 MB in the end (delta: 26.4 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:59,973 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.48 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 103.5 MB in the beginning and 171.3 MB in the end (delta: -67.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.60 ms. Allocated memory is still 203.9 MB. Free memory was 171.3 MB in the beginning and 168.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 723.09 ms. Allocated memory is still 203.9 MB. Free memory was 168.7 MB in the beginning and 117.0 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1853.74 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 116.3 MB in the beginning and 89.9 MB in the end (delta: 26.4 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list [L1029] COND FALSE !(!(((void*)0) != end)) [L1030] EXPR end->colour [L1030] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR end->colour [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR end->next [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 99 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 225 SDtfs, 302 SDslu, 217 SDs, 0 SdLazy, 366 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 70 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 4039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...