/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=NARROWEST --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-simple/dll2c_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:35:30,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:35:30,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:35:30,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:35:30,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:35:30,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:35:30,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:35:30,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:35:30,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:35:30,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:35:30,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:35:30,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:35:30,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:35:30,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:35:30,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:35:30,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:35:30,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:35:30,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:35:30,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:35:30,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:35:30,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:35:30,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:35:30,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:35:30,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:35:30,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:35:30,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:35:30,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:35:30,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:35:30,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:35:30,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:35:30,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:35:30,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:35:30,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:35:30,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:35:30,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:35:30,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:35:30,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:35:30,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:35:30,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:35:30,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:35:30,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:35:30,956 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 [2020-10-13 10:35:30,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:35:30,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:35:30,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:35:30,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:35:30,981 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:35:30,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:35:30,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:35:30,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:35:30,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:35:30,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:35:30,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:35:30,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:35:30,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:35:30,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:35:30,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:35:30,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:35:30,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:35:30,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:35:30,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:35:30,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:35:30,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:35:30,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:35:30,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:35:30,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:35:30,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:35:30,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:35:30,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:35:30,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:35:30,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:35:30,986 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:35:31,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:35:31,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:35:31,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:35:31,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:35:31,286 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:35:31,287 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_append_equal.i [2020-10-13 10:35:31,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e95b69011/fe4d9eb763664ec39e450c57c1e9db31/FLAG3b8b2fdd2 [2020-10-13 10:35:31,859 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:35:31,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_append_equal.i [2020-10-13 10:35:31,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e95b69011/fe4d9eb763664ec39e450c57c1e9db31/FLAG3b8b2fdd2 [2020-10-13 10:35:32,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e95b69011/fe4d9eb763664ec39e450c57c1e9db31 [2020-10-13 10:35:32,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:35:32,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:35:32,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:35:32,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:35:32,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:35:32,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313ced9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32, skipping insertion in model container [2020-10-13 10:35:32,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:35:32,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:35:32,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:35:32,690 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:35:32,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:35:32,810 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:35:32,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32 WrapperNode [2020-10-13 10:35:32,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:35:32,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:35:32,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:35:32,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:35:32,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (1/1) ... [2020-10-13 10:35:32,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:35:32,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:35:32,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:35:32,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:35:32,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (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 [2020-10-13 10:35:32,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:35:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:35:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:35:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:35:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-13 10:35:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-13 10:35:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-13 10:35:32,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-13 10:35:32,943 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2020-10-13 10:35:32,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:35:32,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:35:32,943 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:35:32,943 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:35:32,943 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:35:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:35:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:35:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:35:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:35:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:35:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:35:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:35:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:35:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:35:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:35:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:35:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:35:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:35:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:35:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:35:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:35:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:35:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:35:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:35:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:35:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:35:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:35:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:35:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:35:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:35:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:35:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:35:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:35:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:35:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:35:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:35:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:35:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:35:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:35:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:35:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:35:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:35:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:35:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:35:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:35:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:35:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:35:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:35:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:35:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:35:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:35:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:35:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:35:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:35:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:35:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:35:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:35:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:35:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:35:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:35:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:35:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:35:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:35:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:35:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:35:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:35:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:35:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:35:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:35:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:35:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:35:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:35:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:35:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:35:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:35:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:35:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:35:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:35:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:35:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:35:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:35:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:35:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:35:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:35:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:35:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:35:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:35:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:35:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:35:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:35:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:35:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:35:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:35:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:35:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:35:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:35:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:35:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:35:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:35:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:35:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:35:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:35:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:35:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:35:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:35:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:35:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:35:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-13 10:35:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-13 10:35:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:35:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:35:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:35:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-13 10:35:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-13 10:35:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:35:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:35:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2020-10-13 10:35:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:35:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:35:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:35:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:35:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:35:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:35:33,345 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-13 10:35:33,554 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:35:33,555 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 10:35:33,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:35:33 BoogieIcfgContainer [2020-10-13 10:35:33,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:35:33,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:35:33,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:35:33,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:35:33,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:35:32" (1/3) ... [2020-10-13 10:35:33,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67885834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:35:33, skipping insertion in model container [2020-10-13 10:35:33,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:32" (2/3) ... [2020-10-13 10:35:33,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67885834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:35:33, skipping insertion in model container [2020-10-13 10:35:33,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:35:33" (3/3) ... [2020-10-13 10:35:33,567 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal.i [2020-10-13 10:35:33,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:35:33,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:35:33,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:35:33,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:35:33,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:35:33,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:35:33,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:35:33,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:35:33,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:35:33,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:35:33,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:35:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-13 10:35:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:35:33,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:33,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:33,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:33,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1733597986, now seen corresponding path program 1 times [2020-10-13 10:35:33,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:33,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616344196] [2020-10-13 10:35:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:36,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:35:36,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:35:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2845 [2020-10-13 10:35:36,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 10:35:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:35:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:36,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:36,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:36,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:35:36,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:36,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:36,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:36,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:35:36,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:36,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:35:36,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:36,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:36,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:36,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:36,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:36,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:36,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:35:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:36,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:35:36,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:36,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:35:36,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:36,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:36,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:36,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:35:36,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:35:36,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616344196] [2020-10-13 10:35:36,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:35:36,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:35:36,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873067116] [2020-10-13 10:35:36,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:35:36,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:35:36,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:35:36,905 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-13 10:35:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:37,126 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2020-10-13 10:35:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:35:37,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-13 10:35:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:37,138 INFO L225 Difference]: With dead ends: 97 [2020-10-13 10:35:37,139 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 10:35:37,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:35:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 10:35:37,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-13 10:35:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 10:35:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-13 10:35:37,187 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2020-10-13 10:35:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:37,190 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-13 10:35:37,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:35:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-13 10:35:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:35:37,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:37,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:37,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:35:37,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1013977802, now seen corresponding path program 1 times [2020-10-13 10:35:37,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:37,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348068967] [2020-10-13 10:35:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:35:42,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:35:42,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 10:35:42,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:35:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:35:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:35:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:42,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:35:42,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:42,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:35:42,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 10:35:42,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:35:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:35:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:35:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:42,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:35:42,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:35:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:35:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:35:42,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:35:42,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:35:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:42,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:42,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:35:42,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:42,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:35:42,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348068967] [2020-10-13 10:35:42,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:35:42,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:35:42,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553180021] [2020-10-13 10:35:42,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:35:42,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:42,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:35:42,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:35:42,532 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-10-13 10:35:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:42,907 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-10-13 10:35:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:35:42,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-13 10:35:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:42,909 INFO L225 Difference]: With dead ends: 68 [2020-10-13 10:35:42,910 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:35:42,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:35:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:35:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-13 10:35:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:35:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-13 10:35:42,935 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-10-13 10:35:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:42,936 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-13 10:35:42,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:35:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-13 10:35:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:35:42,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:42,941 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:42,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:35:42,942 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:42,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1378107786, now seen corresponding path program 1 times [2020-10-13 10:35:42,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:42,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764886781] [2020-10-13 10:35:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:47,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:35:47,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:35:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4279 [2020-10-13 10:35:47,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:35:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:35:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:35:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 10:35:47,312 ERROR L253 erpolLogProxyWrapper]: Interpolant 9 not inductive [2020-10-13 10:35:47,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:35:47,314 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-13 10:35:47,321 INFO L168 Benchmark]: Toolchain (without parser) took 15139.13 ms. Allocated memory was 139.5 MB in the beginning and 521.1 MB in the end (delta: 381.7 MB). Free memory was 101.5 MB in the beginning and 447.2 MB in the end (delta: -345.7 MB). Peak memory consumption was 355.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:47,322 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:35:47,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.33 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 167.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:47,324 INFO L168 Benchmark]: Boogie Preprocessor took 70.02 ms. Allocated memory is still 202.9 MB. Free memory was 167.8 MB in the beginning and 165.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:47,325 INFO L168 Benchmark]: RCFGBuilder took 676.18 ms. Allocated memory is still 202.9 MB. Free memory was 165.0 MB in the beginning and 111.5 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:47,328 INFO L168 Benchmark]: TraceAbstraction took 13756.64 ms. Allocated memory was 202.9 MB in the beginning and 521.1 MB in the end (delta: 318.2 MB). Free memory was 111.5 MB in the beginning and 447.2 MB in the end (delta: -335.7 MB). Peak memory consumption was 302.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:47,341 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.33 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 167.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.02 ms. Allocated memory is still 202.9 MB. Free memory was 167.8 MB in the beginning and 165.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 676.18 ms. Allocated memory is still 202.9 MB. Free memory was 165.0 MB in the beginning and 111.5 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13756.64 ms. Allocated memory was 202.9 MB in the beginning and 521.1 MB in the end (delta: 318.2 MB). Free memory was 111.5 MB in the beginning and 447.2 MB in the end (delta: -335.7 MB). Peak memory consumption was 302.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...