/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:34:42,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:34:42,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:34:42,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:34:42,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:34:42,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:34:42,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:34:42,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:34:42,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:34:42,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:34:42,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:34:42,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:34:42,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:34:42,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:34:42,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:34:42,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:34:42,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:34:42,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:34:42,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:34:42,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:34:42,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:34:42,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:34:42,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:34:42,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:34:42,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:34:42,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:34:42,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:34:42,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:34:42,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:34:42,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:34:42,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:34:42,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:34:42,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:34:42,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:34:42,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:34:42,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:34:42,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:34:42,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:34:42,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:34:42,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:34:42,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:34:42,842 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 [2020-10-14 23:34:42,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:34:42,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:34:42,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:34:42,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:34:42,895 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:34:42,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:34:42,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:34:42,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:34:42,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:34:42,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:34:42,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:34:42,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:34:42,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:34:42,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:34:42,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:34:42,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:34:42,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:34:42,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:34:42,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:34:42,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:34:42,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:34:42,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:34:42,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:34:42,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:34:42,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:34:42,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:34:42,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:34:42,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:34:42,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:34:42,903 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:34:43,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:34:43,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:34:43,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:34:43,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:34:43,236 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:34:43,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2020-10-14 23:34:43,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9671bafdb/e453b44c03e947a499db30b7b34bc21e/FLAGe7de644ef [2020-10-14 23:34:43,851 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:34:43,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/simple-1.i [2020-10-14 23:34:43,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9671bafdb/e453b44c03e947a499db30b7b34bc21e/FLAGe7de644ef [2020-10-14 23:34:44,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9671bafdb/e453b44c03e947a499db30b7b34bc21e [2020-10-14 23:34:44,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:34:44,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:34:44,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:34:44,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:34:44,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:34:44,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64749254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44, skipping insertion in model container [2020-10-14 23:34:44,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:34:44,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:34:44,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:34:44,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:34:44,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:34:44,909 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:34:44,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44 WrapperNode [2020-10-14 23:34:44,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:34:44,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:34:44,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:34:44,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:34:44,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (1/1) ... [2020-10-14 23:34:44,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:34:44,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:34:44,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:34:44,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:34:44,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (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 [2020-10-14 23:34:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:34:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:34:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-14 23:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-14 23:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-14 23:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:34:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:34:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:34:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:34:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:34:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:34:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:34:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:34:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:34:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-14 23:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-14 23:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-14 23:34:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:34:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:34:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:34:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:34:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:34:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:34:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:34:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:34:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:34:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:34:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:34:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:34:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:34:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:34:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:34:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:34:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:34:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:34:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:34:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:34:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:34:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:34:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:34:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:34:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:34:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:34:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:34:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:34:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:34:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:34:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:34:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:34:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:34:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:34:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:34:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:34:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:34:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:34:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:34:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:34:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:34:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:34:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:34:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:34:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:34:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:34:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:34:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:34:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:34:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:34:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:34:45,066 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:34:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:34:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:34:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:34:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:34:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:34:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:34:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:34:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:34:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:34:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:34:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:34:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:34:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:34:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:34:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:34:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:34:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:34:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:34:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:34:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:34:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:34:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:34:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:34:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:34:45,379 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:34:45,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:34:45,529 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 23:34:45,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:34:45 BoogieIcfgContainer [2020-10-14 23:34:45,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:34:45,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:34:45,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:34:45,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:34:45,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:34:44" (1/3) ... [2020-10-14 23:34:45,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d43e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:34:45, skipping insertion in model container [2020-10-14 23:34:45,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:44" (2/3) ... [2020-10-14 23:34:45,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d43e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:34:45, skipping insertion in model container [2020-10-14 23:34:45,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:34:45" (3/3) ... [2020-10-14 23:34:45,546 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-1.i [2020-10-14 23:34:45,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:34:45,565 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:34:45,580 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:34:45,606 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:34:45,607 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:34:45,607 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:34:45,607 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:34:45,607 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:34:45,607 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:34:45,607 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:34:45,608 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:34:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 23:34:45,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 23:34:45,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:45,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:45,635 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1710443637, now seen corresponding path program 1 times [2020-10-14 23:34:45,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:45,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903504068] [2020-10-14 23:34:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:46,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:46,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:34:46,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:34:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 23:34:46,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:46,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:34:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:34:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:34:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:34:46,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:46,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:46,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:46,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:34:46,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:46,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:34:46,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903504068] [2020-10-14 23:34:46,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:34:46,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:34:46,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919923348] [2020-10-14 23:34:46,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:34:46,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:46,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:34:46,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:34:46,295 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-10-14 23:34:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:46,485 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-10-14 23:34:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:34:46,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-14 23:34:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:46,495 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:34:46,496 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 23:34:46,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:34:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 23:34:46,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-14 23:34:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 23:34:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-14 23:34:46,541 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 13 [2020-10-14 23:34:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:46,542 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-14 23:34:46,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:34:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-14 23:34:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:34:46,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:46,543 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:46,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:34:46,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:46,545 INFO L82 PathProgramCache]: Analyzing trace with hash 714847529, now seen corresponding path program 1 times [2020-10-14 23:34:46,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:46,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744342754] [2020-10-14 23:34:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:46,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:46,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:46,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:34:46,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:46,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 23:34:46,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:46,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:34:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:34:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:34:46,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:46,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:46,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:46,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:34:46,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:46,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:34:46,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744342754] [2020-10-14 23:34:46,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:34:46,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:34:46,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099407768] [2020-10-14 23:34:46,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:34:46,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:46,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:34:46,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:34:46,820 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-10-14 23:34:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:46,913 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-10-14 23:34:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:34:46,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-14 23:34:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:46,915 INFO L225 Difference]: With dead ends: 37 [2020-10-14 23:34:46,915 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 23:34:46,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:34:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 23:34:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2020-10-14 23:34:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 23:34:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-14 23:34:46,922 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2020-10-14 23:34:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:46,922 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-14 23:34:46,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:34:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-14 23:34:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:34:46,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:46,924 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:46,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:34:46,924 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash -158216428, now seen corresponding path program 1 times [2020-10-14 23:34:46,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:46,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278294096] [2020-10-14 23:34:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:34:46,946 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:34:46,947 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:34:46,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:34:46,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:34:46 BoogieIcfgContainer [2020-10-14 23:34:46,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:34:46,971 INFO L168 Benchmark]: Toolchain (without parser) took 2786.29 ms. Allocated memory was 148.4 MB in the beginning and 234.4 MB in the end (delta: 86.0 MB). Free memory was 103.6 MB in the beginning and 131.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:46,972 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:34:46,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.82 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.1 MB in the beginning and 171.3 MB in the end (delta: -68.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:46,974 INFO L168 Benchmark]: Boogie Preprocessor took 60.24 ms. Allocated memory is still 205.0 MB. Free memory was 171.3 MB in the beginning and 168.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:46,975 INFO L168 Benchmark]: RCFGBuilder took 562.20 ms. Allocated memory is still 205.0 MB. Free memory was 167.7 MB in the beginning and 125.4 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:46,976 INFO L168 Benchmark]: TraceAbstraction took 1429.89 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 125.4 MB in the beginning and 131.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:46,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.82 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.1 MB in the beginning and 171.3 MB in the end (delta: -68.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.24 ms. Allocated memory is still 205.0 MB. Free memory was 171.3 MB in the beginning and 168.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 562.20 ms. Allocated memory is still 205.0 MB. Free memory was 167.7 MB in the beginning and 125.4 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1429.89 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 125.4 MB in the beginning and 131.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 538]: 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] a->h = 2 [L526] COND TRUE __VERIFIER_nondet_int() [L527] p->h = 1 [L528] t = (List) malloc(sizeof(struct node)) [L529] COND FALSE !(t == 0) [L530] p->n = t [L531] EXPR p->n [L531] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L533] p->h = 2 [L534] p->n = 0 [L535] p = a [L536] COND TRUE p!=0 [L537] EXPR p->h [L537] COND TRUE p->h != 2 [L538] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 31 SDslu, 97 SDs, 0 SdLazy, 114 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...