/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:35,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:35,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:35,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:35,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:35,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:35,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:35,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:35,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:35,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:35,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:35,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:35,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:35,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:35,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:35,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:35,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:35,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:35,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:35,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:35,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:35,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:35,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:35,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:35,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:35,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:35,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:35,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:35,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:35,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:35,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:35,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:35,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:35,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:35,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:35,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:35,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:35,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:35,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:35,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:35,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:35,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:00:35,347 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:35,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:35,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:35,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:35,350 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:35,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:35,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:35,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:35,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:35,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:35,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:35,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:35,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:35,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:35,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:35,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:35,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:35,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:35,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:35,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:35,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:35,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:35,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:35,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:35,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:35,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:35,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:35,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:35,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:35,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:35,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:35,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:35,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:35,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:35,939 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:35,940 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2020-09-24 16:00:36,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deb0b989d/16edda79332148fcb75b7b14fec2f7a3/FLAG85043888a [2020-09-24 16:00:36,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:36,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2020-09-24 16:00:36,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deb0b989d/16edda79332148fcb75b7b14fec2f7a3/FLAG85043888a [2020-09-24 16:00:36,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deb0b989d/16edda79332148fcb75b7b14fec2f7a3 [2020-09-24 16:00:36,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:36,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:36,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:36,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:36,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:36,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:36" (1/1) ... [2020-09-24 16:00:36,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfa12c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:36, skipping insertion in model container [2020-09-24 16:00:36,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:36" (1/1) ... [2020-09-24 16:00:36,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:37,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:37,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:37,560 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:37,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:37,708 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:37,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37 WrapperNode [2020-09-24 16:00:37,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:37,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:37,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:37,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:37,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:37,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:37,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:37,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:37,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 16:00:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 16:00:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-24 16:00:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2020-09-24 16:00:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2020-09-24 16:00:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2020-09-24 16:00:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2020-09-24 16:00:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2020-09-24 16:00:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2020-09-24 16:00:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2020-09-24 16:00:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2020-09-24 16:00:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 16:00:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 16:00:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:00:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:00:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:00:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:00:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:00:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:00:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:00:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:00:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:00:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:00:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:00:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:00:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:00:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:00:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:00:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:00:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:00:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:00:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:00:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:00:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:00:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:00:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:00:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:00:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:00:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:00:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:00:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:00:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:00:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:00:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:00:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:00:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:00:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:00:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:00:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:00:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:00:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:00:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:00:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:00:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:00:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:00:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:00:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:00:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:00:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:00:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:00:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:00:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:00:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:00:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:00:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:00:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:00:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:00:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:00:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:00:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:00:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:00:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:00:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:00:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:00:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:00:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:00:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:00:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:00:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:00:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:00:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:00:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:00:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:00:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:00:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:00:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:00:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:00:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:00:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:00:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:00:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:00:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:00:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:00:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:00:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:00:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:00:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:00:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:00:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:00:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:00:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:00:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:00:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:00:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:00:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:00:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:00:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:00:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:00:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:00:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:00:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:00:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:00:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:00:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-24 16:00:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2020-09-24 16:00:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:00:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:00:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2020-09-24 16:00:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:00:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2020-09-24 16:00:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:00:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 16:00:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:00:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2020-09-24 16:00:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2020-09-24 16:00:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2020-09-24 16:00:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2020-09-24 16:00:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2020-09-24 16:00:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:38,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:38,929 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-24 16:00:38,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:38 BoogieIcfgContainer [2020-09-24 16:00:38,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:38,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:38,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:38,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:38,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:36" (1/3) ... [2020-09-24 16:00:38,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c7fd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:38, skipping insertion in model container [2020-09-24 16:00:38,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (2/3) ... [2020-09-24 16:00:38,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c7fd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:38, skipping insertion in model container [2020-09-24 16:00:38,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:38" (3/3) ... [2020-09-24 16:00:38,962 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2020-09-24 16:00:38,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:38,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:39,012 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:39,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:39,067 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:39,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:39,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:39,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:39,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:39,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:39,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-09-24 16:00:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 16:00:39,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:39,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:39,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2069327278, now seen corresponding path program 1 times [2020-09-24 16:00:39,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:39,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231939416] [2020-09-24 16:00:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:39,328 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:39,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:39,328 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:39,328 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:39,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 16:00:39,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:00:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:00:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:39,415 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:39,415 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:39,415 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:39,415 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:39,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:39,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:39,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 16:00:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:39,454 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:39,455 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:39,455 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:39,455 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:39,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 16:00:39,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:39,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:39,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:00:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:39,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231939416] [2020-09-24 16:00:39,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:39,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:39,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266386133] [2020-09-24 16:00:39,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:39,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:39,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:39,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:39,525 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2020-09-24 16:00:40,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:40,085 INFO L93 Difference]: Finished difference Result 423 states and 572 transitions. [2020-09-24 16:00:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:40,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-24 16:00:40,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:40,106 INFO L225 Difference]: With dead ends: 423 [2020-09-24 16:00:40,107 INFO L226 Difference]: Without dead ends: 211 [2020-09-24 16:00:40,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-24 16:00:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 188. [2020-09-24 16:00:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-24 16:00:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 208 transitions. [2020-09-24 16:00:40,197 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 208 transitions. Word has length 41 [2020-09-24 16:00:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:40,198 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 208 transitions. [2020-09-24 16:00:40,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 208 transitions. [2020-09-24 16:00:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 16:00:40,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:40,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:40,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:40,204 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash 2121642840, now seen corresponding path program 1 times [2020-09-24 16:00:40,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:40,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994969549] [2020-09-24 16:00:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:41,151 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:00:41,151 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:41,151 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:41,151 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:41,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 16:00:41,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-09-24 16:00:41,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 16:00:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:00:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 16:00:41,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:41,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:41,329 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:41,329 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:41,330 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:41,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:41,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:41,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:41,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:41,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 16:00:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:41,825 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:41,825 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:41,826 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:41,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:41,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 16:00:41,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-24 16:00:41,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 16:00:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 16:00:41,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:42,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 16:00:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:42,251 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:42,251 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:42,251 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:42,252 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:42,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 16:00:42,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 16:00:42,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:00:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 16:00:42,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 16:00:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:42,424 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:42,425 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:42,425 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:42,425 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:42,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 16:00:42,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:00:42,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:00:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:00:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:42,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 16:00:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:42,615 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:42,616 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:42,616 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:42,616 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:42,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 16:00:42,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 16:00:42,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:42,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:00:42,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 16:00:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,242 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-09-24 16:00:44,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 16:00:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,314 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,314 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,314 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,315 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 16:00:44,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 16:00:44,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:00:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 16:00:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:44,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994969549] [2020-09-24 16:00:44,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:44,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-24 16:00:44,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883098007] [2020-09-24 16:00:44,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-24 16:00:44,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:44,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-24 16:00:44,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 16:00:44,793 INFO L87 Difference]: Start difference. First operand 188 states and 208 transitions. Second operand 34 states. [2020-09-24 16:00:46,770 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-24 16:00:47,383 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-09-24 16:00:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:51,730 INFO L93 Difference]: Finished difference Result 270 states and 307 transitions. [2020-09-24 16:00:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 16:00:51,731 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 85 [2020-09-24 16:00:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:51,735 INFO L225 Difference]: With dead ends: 270 [2020-09-24 16:00:51,735 INFO L226 Difference]: Without dead ends: 267 [2020-09-24 16:00:51,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=267, Invalid=3155, Unknown=0, NotChecked=0, Total=3422 [2020-09-24 16:00:51,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-24 16:00:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 205. [2020-09-24 16:00:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-24 16:00:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 227 transitions. [2020-09-24 16:00:51,764 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 227 transitions. Word has length 85 [2020-09-24 16:00:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:51,765 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 227 transitions. [2020-09-24 16:00:51,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-24 16:00:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 227 transitions. [2020-09-24 16:00:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 16:00:51,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:51,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:51,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:51,769 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1210442558, now seen corresponding path program 1 times [2020-09-24 16:00:51,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:51,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364848813] [2020-09-24 16:00:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:52,190 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-24 16:00:52,190 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:52,191 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:52,192 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:52,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-24 16:00:52,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:52,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-24 16:00:52,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 16:00:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:00:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 16:00:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:52,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:52,384 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:52,385 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:52,385 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:52,386 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:52,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:52,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:52,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:52,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 16:00:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 16:00:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:52,754 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-24 16:00:52,754 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:52,754 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:52,754 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:52,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 16:00:52,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:52,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-24 16:00:52,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 16:00:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 16:00:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 16:00:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:53,052 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:53,053 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:53,053 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:53,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:53,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 16:00:53,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 16:00:53,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:00:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 16:00:53,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:53,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 16:00:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:53,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:53,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:53,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:53,184 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:53,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 16:00:53,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:53,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:00:53,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:53,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:00:53,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:53,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:00:53,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 16:00:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:53,354 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:53,355 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:53,355 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:53,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 16:00:53,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 16:00:53,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:00:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 16:00:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:54,897 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-09-24 16:00:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 16:00:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:54,963 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:54,964 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:54,964 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:54,964 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:54,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 16:00:54,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 16:00:54,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:00:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 16:00:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 16:00:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:55,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364848813] [2020-09-24 16:00:55,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:55,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-24 16:00:55,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251290278] [2020-09-24 16:00:55,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-24 16:00:55,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:55,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-24 16:00:55,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 16:00:55,435 INFO L87 Difference]: Start difference. First operand 205 states and 227 transitions. Second operand 33 states. [2020-09-24 16:00:57,107 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-24 16:00:57,508 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 16:00:58,179 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2020-09-24 16:01:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:02,593 INFO L93 Difference]: Finished difference Result 278 states and 317 transitions. [2020-09-24 16:01:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 16:01:02,594 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 87 [2020-09-24 16:01:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:02,600 INFO L225 Difference]: With dead ends: 278 [2020-09-24 16:01:02,600 INFO L226 Difference]: Without dead ends: 275 [2020-09-24 16:01:02,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=307, Invalid=3353, Unknown=0, NotChecked=0, Total=3660 [2020-09-24 16:01:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-24 16:01:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 205. [2020-09-24 16:01:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-24 16:01:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 226 transitions. [2020-09-24 16:01:02,649 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 226 transitions. Word has length 87 [2020-09-24 16:01:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:02,650 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 226 transitions. [2020-09-24 16:01:02,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-24 16:01:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 226 transitions. [2020-09-24 16:01:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 16:01:02,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:02,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:02,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:01:02,654 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 2145368719, now seen corresponding path program 1 times [2020-09-24 16:01:02,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:02,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791366733] [2020-09-24 16:01:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:01:02,708 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:01:02,708 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:01:02,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:01:02,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:01:02 BoogieIcfgContainer [2020-09-24 16:01:02,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:01:02,742 INFO L168 Benchmark]: Toolchain (without parser) took 25803.67 ms. Allocated memory was 138.4 MB in the beginning and 477.1 MB in the end (delta: 338.7 MB). Free memory was 98.9 MB in the beginning and 422.7 MB in the end (delta: -323.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:02,743 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:01:02,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.83 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 98.2 MB in the beginning and 165.0 MB in the end (delta: -66.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:02,745 INFO L168 Benchmark]: Boogie Preprocessor took 90.37 ms. Allocated memory is still 200.8 MB. Free memory was 165.0 MB in the beginning and 161.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:02,746 INFO L168 Benchmark]: RCFGBuilder took 1140.06 ms. Allocated memory is still 200.8 MB. Free memory was 161.6 MB in the beginning and 89.2 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:02,747 INFO L168 Benchmark]: TraceAbstraction took 23796.98 ms. Allocated memory was 200.8 MB in the beginning and 477.1 MB in the end (delta: 276.3 MB). Free memory was 88.5 MB in the beginning and 422.7 MB in the end (delta: -334.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:01:02,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.83 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 98.2 MB in the beginning and 165.0 MB in the end (delta: -66.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.37 ms. Allocated memory is still 200.8 MB. Free memory was 165.0 MB in the beginning and 161.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1140.06 ms. Allocated memory is still 200.8 MB. Free memory was 161.6 MB in the beginning and 89.2 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23796.98 ms. Allocated memory was 200.8 MB in the beginning and 477.1 MB in the end (delta: 276.3 MB). Free memory was 88.5 MB in the beginning and 422.7 MB in the end (delta: -334.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L628] const struct node *p1, *p2; [L629] CALL, EXPR create_sll(&p1, &p2) [L577] struct node *list = ((void *)0); [L579] CALL chain_node(&list) [L571] CALL, EXPR alloc_node() [L562] struct node *ptr = malloc(sizeof *ptr); [L563] COND FALSE !(!ptr) [L565] ptr->next = ((void *)0) [L566] ptr->prev = ((void *)0) [L567] return ptr; [L571] RET, EXPR alloc_node() [L571] struct node *node = alloc_node(); [L572] EXPR \read(**ppnode) [L572] node->next = *ppnode [L573] *ppnode = node [L579] RET chain_node(&list) [L580] COND FALSE !(__VERIFIER_nondet_int()) [L581] EXPR \read(*list) [L581] *pp2 = list [L582] COND FALSE !(__VERIFIER_nondet_int()) [L584] EXPR \read(*list) [L584] *pp1 = list [L586] CALL chain_node(&list) [L571] CALL, EXPR alloc_node() [L562] struct node *ptr = malloc(sizeof *ptr); [L563] COND FALSE !(!ptr) [L565] ptr->next = ((void *)0) [L566] ptr->prev = ((void *)0) [L567] return ptr; [L571] RET, EXPR alloc_node() [L571] struct node *node = alloc_node(); [L572] EXPR \read(**ppnode) [L572] node->next = *ppnode [L573] *ppnode = node [L586] RET chain_node(&list) [L587] COND FALSE !(__VERIFIER_nondet_int()) [L588] EXPR \read(*list) [L588] return list; [L577] struct node *list = ((void *)0); [L588] return list; [L629] RET, EXPR create_sll(&p1, &p2) [L629] struct node *list = create_sll(&p1, &p2); [L631] EXPR \read(*p1) [L631] EXPR \read(*p2) [L631] CALL check_seq_next(p1, p2) [L615] COND FALSE !(!(beg)) [L616] COND FALSE !(!(end)) [L617] EXPR beg->next [L617] beg = beg->next [L617] COND TRUE end != beg [L618] COND TRUE !(beg) [L618] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 218 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 521 SDtfs, 1355 SDslu, 2706 SDs, 0 SdLazy, 6536 SolverSat, 436 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 155 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 1207348 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 18/36 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...