/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/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:39,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:39,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:39,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:39,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:39,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:39,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:39,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:39,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:39,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:39,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:39,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:39,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:39,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:39,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:39,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:39,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:39,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:39,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:39,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:39,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:39,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:39,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:39,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:39,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:39,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:39,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:39,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:39,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:39,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:39,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:39,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:39,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:39,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:39,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:39,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:39,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:39,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:39,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:39,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:39,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:39,992 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 16:00:40,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:40,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:40,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:40,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:40,042 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:40,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:40,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:40,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:40,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:40,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:40,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:40,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:40,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:40,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:40,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:40,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:40,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:40,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:40,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:40,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:40,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:40,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:40,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:40,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:40,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:40,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:40,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:40,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:40,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:40,048 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 16:00:40,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:40,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:40,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:40,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:40,526 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:40,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-24 16:00:40,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bef319087/0e235e532b394189a455aa804b42c5d2/FLAG8a7a1d7f8 [2020-09-24 16:00:41,240 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:41,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-24 16:00:41,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bef319087/0e235e532b394189a455aa804b42c5d2/FLAG8a7a1d7f8 [2020-09-24 16:00:41,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bef319087/0e235e532b394189a455aa804b42c5d2 [2020-09-24 16:00:41,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:41,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:41,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:41,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:41,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:41,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:41" (1/1) ... [2020-09-24 16:00:41,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2939e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:41, skipping insertion in model container [2020-09-24 16:00:41,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:41" (1/1) ... [2020-09-24 16:00:41,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:41,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:42,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:42,096 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:42,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:42,222 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:42,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42 WrapperNode [2020-09-24 16:00:42,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:42,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:42,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:42,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:42,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (1/1) ... [2020-09-24 16:00:42,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:42,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:42,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:42,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:42,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (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 16:00:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 16:00:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 16:00:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 16:00:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 16:00:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 16:00:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 16:00:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:00:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:00:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:00:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:00:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:00:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:00:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:00:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:00:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:00:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:00:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:00:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:00:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:00:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:00:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:00:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:00:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 16:00:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 16:00:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 16:00:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 16:00:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 16:00:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:00:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:00:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:00:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:00:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:00:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:00:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:00:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:00:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:00:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:00:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:00:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:00:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:00:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:00:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:00:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:00:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:00:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:00:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:00:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:00:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:00:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:00:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:00:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:00:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:00:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:00:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:00:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:00:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:00:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:00:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:00:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:00:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:00:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:00:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:00:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:00:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:00:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:00:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:00:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:00:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:00:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:00:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:00:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:00:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:00:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:00:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:00:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:00:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:00:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:00:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:00:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:00:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:00:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:00:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:00:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:00:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:00:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:00:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:00:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:00:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:00:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:00:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:00:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:00:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:00:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:00:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:00:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:00:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:00:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:00:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:00:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:00:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:00:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:00:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:00:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:00:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:00:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:00:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:00:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:00:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:00:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:00:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:00:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:00:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:00:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:00:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 16:00:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:00:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:00:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:00:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:00:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:00:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:00:42,787 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 16:00:42,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:42,984 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 16:00:42,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:42 BoogieIcfgContainer [2020-09-24 16:00:42,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:42,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:42,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:43,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:43,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:41" (1/3) ... [2020-09-24 16:00:43,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174a57ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:43, skipping insertion in model container [2020-09-24 16:00:43,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:42" (2/3) ... [2020-09-24 16:00:43,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174a57ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:43, skipping insertion in model container [2020-09-24 16:00:43,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:42" (3/3) ... [2020-09-24 16:00:43,008 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-09-24 16:00:43,019 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:43,031 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:43,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:43,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:43,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:43,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:43,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:43,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:43,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:43,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:43,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-24 16:00:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 16:00:43,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:43,117 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] [2020-09-24 16:00:43,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:43,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:43,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1409516089, now seen corresponding path program 1 times [2020-09-24 16:00:43,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:43,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140850089] [2020-09-24 16:00:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:43,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:43,317 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:43,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 16:00:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:00:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:00:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:43,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:43,410 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:43,410 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:43,410 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:43,411 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:43,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:43,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:43,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:43,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:43,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:43,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:43,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:43,429 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 16:00:43,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140850089] [2020-09-24 16:00:43,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:43,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:43,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33383313] [2020-09-24 16:00:43,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:43,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:43,480 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-09-24 16:00:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:43,672 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-09-24 16:00:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:43,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-24 16:00:43,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:43,687 INFO L225 Difference]: With dead ends: 89 [2020-09-24 16:00:43,687 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 16:00:43,692 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 16:00:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 16:00:43,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 16:00:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 16:00:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-24 16:00:43,747 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 26 [2020-09-24 16:00:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:43,748 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-24 16:00:43,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:43,749 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-24 16:00:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 16:00:43,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:43,750 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] [2020-09-24 16:00:43,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:43,751 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:43,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1836407039, now seen corresponding path program 1 times [2020-09-24 16:00:43,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:43,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229855832] [2020-09-24 16:00:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:43,856 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:43,857 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:43,857 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:43,857 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:43,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 16:00:43,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 16:00:43,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:00:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 16:00:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:43,955 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:43,956 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:43,956 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:43,956 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:43,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:43,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:43,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:43,969 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 16:00:43,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229855832] [2020-09-24 16:00:43,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:43,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:00:43,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449994091] [2020-09-24 16:00:43,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:00:43,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:43,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:00:43,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:00:43,973 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-09-24 16:00:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:44,232 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-09-24 16:00:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 16:00:44,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-24 16:00:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:44,235 INFO L225 Difference]: With dead ends: 122 [2020-09-24 16:00:44,236 INFO L226 Difference]: Without dead ends: 115 [2020-09-24 16:00:44,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:00:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-24 16:00:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-09-24 16:00:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 16:00:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-24 16:00:44,251 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 30 [2020-09-24 16:00:44,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:44,252 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-24 16:00:44,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:00:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-24 16:00:44,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 16:00:44,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:44,254 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] [2020-09-24 16:00:44,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:44,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:44,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1477911671, now seen corresponding path program 1 times [2020-09-24 16:00:44,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:44,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155132682] [2020-09-24 16:00:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,304 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,304 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,304 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,304 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 16:00:44,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 16:00:44,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:00:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,390 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,390 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,391 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,391 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:44,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:44,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:44,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:44,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:44,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155132682] [2020-09-24 16:00:44,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:44,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:00:44,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926217047] [2020-09-24 16:00:44,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:00:44,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:44,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:00:44,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:00:44,404 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-09-24 16:00:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:44,659 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-09-24 16:00:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 16:00:44,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 16:00:44,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:44,661 INFO L225 Difference]: With dead ends: 117 [2020-09-24 16:00:44,661 INFO L226 Difference]: Without dead ends: 103 [2020-09-24 16:00:44,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:00:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-24 16:00:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2020-09-24 16:00:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 16:00:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-24 16:00:44,672 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 36 [2020-09-24 16:00:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:44,673 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-24 16:00:44,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:00:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-24 16:00:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 16:00:44,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:44,675 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] [2020-09-24 16:00:44,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:44,675 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:44,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:44,676 INFO L82 PathProgramCache]: Analyzing trace with hash -380981001, now seen corresponding path program 1 times [2020-09-24 16:00:44,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:44,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978765434] [2020-09-24 16:00:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,715 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,716 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,716 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,716 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 16:00:44,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 16:00:44,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:00:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,815 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,816 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,816 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,816 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:44,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:44,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:44,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:44,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:44,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:44,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978765434] [2020-09-24 16:00:44,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:44,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:00:44,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569583132] [2020-09-24 16:00:44,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:00:44,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:44,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:00:44,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:00:44,844 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 7 states. [2020-09-24 16:00:45,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:45,097 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-09-24 16:00:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:00:45,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 16:00:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:45,099 INFO L225 Difference]: With dead ends: 100 [2020-09-24 16:00:45,099 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 16:00:45,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:00:45,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 16:00:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 55. [2020-09-24 16:00:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 16:00:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-24 16:00:45,106 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2020-09-24 16:00:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:45,107 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-24 16:00:45,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:00:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-24 16:00:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 16:00:45,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:45,109 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] [2020-09-24 16:00:45,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:45,109 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:45,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276919, now seen corresponding path program 1 times [2020-09-24 16:00:45,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:45,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261893046] [2020-09-24 16:00:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:00:45,147 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:00:45,147 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:00:45,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:45,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:45 BoogieIcfgContainer [2020-09-24 16:00:45,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:45,179 INFO L168 Benchmark]: Toolchain (without parser) took 3653.33 ms. Allocated memory was 139.5 MB in the beginning and 247.5 MB in the end (delta: 108.0 MB). Free memory was 100.6 MB in the beginning and 190.8 MB in the end (delta: -90.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:45,180 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 16:00:45,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.02 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 169.5 MB in the end (delta: -69.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:45,182 INFO L168 Benchmark]: Boogie Preprocessor took 77.38 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 166.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:45,183 INFO L168 Benchmark]: RCFGBuilder took 692.26 ms. Allocated memory is still 203.4 MB. Free memory was 166.8 MB in the beginning and 120.1 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:45,184 INFO L168 Benchmark]: TraceAbstraction took 2178.50 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 120.1 MB in the beginning and 190.8 MB in the end (delta: -70.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:00:45,188 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 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.02 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 169.5 MB in the end (delta: -69.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.38 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 166.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 692.26 ms. Allocated memory is still 203.4 MB. Free memory was 166.8 MB in the beginning and 120.1 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2178.50 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 120.1 MB in the beginning and 190.8 MB in the end (delta: -70.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) [L524] COND FALSE !(a == 0) [L525] p = a [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 1 [L532] t = (List) malloc(sizeof(struct node)) [L533] COND FALSE !(t == 0) [L534] p->n = t [L535] EXPR p->n [L535] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 [L538] p = a [L539] COND TRUE \read(flag) [L540] EXPR p->h [L540] COND FALSE !(p->h == 2) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 210 SDtfs, 217 SDslu, 451 SDs, 0 SdLazy, 504 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=2, 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, 4 MinimizatonAttempts, 121 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 9910 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...