/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext-properties/simple-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:58:55,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:55,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:55,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:55,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:55,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:55,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:55,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:55,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:55,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:55,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:55,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:55,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:55,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:55,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:55,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:55,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:55,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:55,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:55,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:55,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:55,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:55,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:55,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:55,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:55,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:55,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:55,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:55,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:55,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:58:55,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:58:55,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:58:55,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:58:55,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:58:55,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:58:55,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:58:55,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:58:55,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:58:55,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:55,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:55,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:55,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:58:55,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:55,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:55,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:55,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:55,116 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:55,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:55,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:55,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:55,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:55,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:55,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:55,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:55,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:55,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:55,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:55,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:55,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:55,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:55,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:55,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:55,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:55,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:55,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:55,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:55,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:55,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:55,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:55,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:55,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:55,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:58:55,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:55,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:55,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:55,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:55,656 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:55,657 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/simple-ext.i [2020-09-25 00:58:55,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfe1f0c6/4da84f1f704e4dcd9bb174868804de9e/FLAG4e968b230 [2020-09-25 00:58:56,326 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:56,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext-properties/simple-ext.i [2020-09-25 00:58:56,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfe1f0c6/4da84f1f704e4dcd9bb174868804de9e/FLAG4e968b230 [2020-09-25 00:58:56,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfe1f0c6/4da84f1f704e4dcd9bb174868804de9e [2020-09-25 00:58:56,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:56,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:56,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:56,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:56,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:56,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:56" (1/1) ... [2020-09-25 00:58:56,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d608ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:56, skipping insertion in model container [2020-09-25 00:58:56,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:56" (1/1) ... [2020-09-25 00:58:56,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:56,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:57,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:57,174 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:57,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:57,303 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:57,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57 WrapperNode [2020-09-25 00:58:57,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:57,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:57,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:57,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:57,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (1/1) ... [2020-09-25 00:58:57,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:57,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:57,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:57,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:57,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (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 [2020-09-25 00:58:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 00:58:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 00:58:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 00:58:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 00:58:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 00:58:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 00:58:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:58:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:58:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:58:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:58:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:58:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:58:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:58:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:58:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:58:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:58:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:58:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:58:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:58:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:58:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:58:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:58:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:58:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 00:58:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 00:58:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 00:58:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 00:58:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 00:58:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:58:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:58:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:58:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:58:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:58:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:58:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:58:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:58:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:58:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:58:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:58:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:58:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:58:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:58:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:58:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:58:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:58:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:58:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:58:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:58:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:58:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:58:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:58:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:58:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:58:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:58:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:58:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:58:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:58:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:58:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:58:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:58:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:58:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:58:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:58:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:58:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:58:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:58:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:58:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:58:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:58:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:58:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:58:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:58:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:58:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:58:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:58:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:58:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:58:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:58:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:58:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:58:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:58:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:58:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:58:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:58:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:58:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:58:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:58:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:58:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:58:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:58:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:58:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:58:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:58:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:58:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:58:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:58:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:58:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:58:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:58:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:58:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:58:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:58:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:58:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:58:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:58:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:58:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:58:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:58:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:58:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:58:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:58:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:58:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:58:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:58:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 00:58:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:58:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:58:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:58:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:58:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:58:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:57,859 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 00:58:58,059 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:58,060 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 00:58:58,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:58 BoogieIcfgContainer [2020-09-25 00:58:58,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:58,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:58,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:58,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:58,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:56" (1/3) ... [2020-09-25 00:58:58,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720e5786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:58, skipping insertion in model container [2020-09-25 00:58:58,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:57" (2/3) ... [2020-09-25 00:58:58,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720e5786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:58, skipping insertion in model container [2020-09-25 00:58:58,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:58" (3/3) ... [2020-09-25 00:58:58,076 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2020-09-25 00:58:58,089 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:58,101 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:58:58,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:58:58,161 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:58,161 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:58,161 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:58,162 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:58,162 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:58,162 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:58,162 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:58,162 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-09-25 00:58:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 00:58:58,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:58,200 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] [2020-09-25 00:58:58,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:58,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:58,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1527556188, now seen corresponding path program 1 times [2020-09-25 00:58:58,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:58,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058059654] [2020-09-25 00:58:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:58,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:58,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 00:58:58,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:58,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 00:58:58,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:58:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:58:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:58,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:58,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 00:58:58,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:58,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:58:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:58,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058059654] [2020-09-25 00:58:58,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:58,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:58:58,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558291774] [2020-09-25 00:58:58,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:58:58,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:58,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:58:58,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:58:58,705 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-09-25 00:58:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:58,882 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2020-09-25 00:58:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:58:58,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 00:58:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:58,895 INFO L225 Difference]: With dead ends: 95 [2020-09-25 00:58:58,895 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 00:58:58,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:58:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 00:58:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 00:58:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 00:58:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-09-25 00:58:58,950 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 23 [2020-09-25 00:58:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:58,951 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-09-25 00:58:58,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:58:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-09-25 00:58:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 00:58:58,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:58,953 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] [2020-09-25 00:58:58,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:58:58,954 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:58,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2054563523, now seen corresponding path program 1 times [2020-09-25 00:58:58,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:58,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533188261] [2020-09-25 00:58:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:59,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:58:59,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 00:58:59,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:58:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:58:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 00:58:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:59,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:59,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:59,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:58:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:59,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533188261] [2020-09-25 00:58:59,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:59,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:58:59,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60689851] [2020-09-25 00:58:59,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:58:59,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:59,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:58:59,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:58:59,320 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 5 states. [2020-09-25 00:58:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:59,454 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2020-09-25 00:58:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:58:59,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 00:58:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:59,457 INFO L225 Difference]: With dead ends: 122 [2020-09-25 00:58:59,457 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 00:58:59,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:58:59,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 00:58:59,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2020-09-25 00:58:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 00:58:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-09-25 00:58:59,469 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 27 [2020-09-25 00:58:59,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:59,470 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-09-25 00:58:59,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:58:59,470 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-09-25 00:58:59,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 00:58:59,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:59,471 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] [2020-09-25 00:58:59,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:58:59,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2100491616, now seen corresponding path program 1 times [2020-09-25 00:58:59,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:59,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452753481] [2020-09-25 00:58:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:58:59,496 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:58:59,497 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:58:59,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:58:59,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:58:59 BoogieIcfgContainer [2020-09-25 00:58:59,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:58:59,526 INFO L168 Benchmark]: Toolchain (without parser) took 2926.86 ms. Allocated memory was 137.4 MB in the beginning and 229.6 MB in the end (delta: 92.3 MB). Free memory was 99.6 MB in the beginning and 134.0 MB in the end (delta: -34.5 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:59,527 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:58:59,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.12 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 165.0 MB in the end (delta: -66.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:59,529 INFO L168 Benchmark]: Boogie Preprocessor took 69.87 ms. Allocated memory is still 200.8 MB. Free memory was 165.0 MB in the beginning and 162.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:59,530 INFO L168 Benchmark]: RCFGBuilder took 690.18 ms. Allocated memory is still 200.8 MB. Free memory was 162.1 MB in the beginning and 114.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:59,531 INFO L168 Benchmark]: TraceAbstraction took 1455.97 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 113.8 MB in the beginning and 134.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:59,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.12 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 165.0 MB in the end (delta: -66.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.87 ms. Allocated memory is still 200.8 MB. Free memory was 165.0 MB in the beginning and 162.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 690.18 ms. Allocated memory is still 200.8 MB. Free memory was 162.1 MB in the beginning and 114.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1455.97 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 113.8 MB in the beginning and 134.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] int i = 0; [L526] i < 30 && __VERIFIER_nondet_int() [L526] i < 30 && __VERIFIER_nondet_int() [L526] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L534] p->h = i [L535] p->n = 0 [L536] p = a [L537] i = 0 [L538] COND TRUE p!=0 [L539] EXPR p->h [L539] COND TRUE p->h != 1 [L540] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 40 SDslu, 87 SDs, 0 SdLazy, 134 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...