/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:50:38,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:50:38,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:50:38,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:50:38,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:50:38,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:50:38,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:50:38,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:50:38,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:50:38,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:50:38,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:50:38,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:50:38,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:50:38,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:50:38,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:50:38,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:50:38,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:50:38,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:50:38,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:50:38,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:50:38,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:50:38,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:50:38,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:50:38,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:50:38,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:50:38,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:50:38,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:50:38,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:50:38,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:50:38,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:50:38,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:50:38,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:50:38,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:50:38,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:50:38,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:50:38,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:50:38,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:50:38,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:50:38,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:50:38,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:50:38,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:50:38,986 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 23:50:39,015 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:50:39,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:50:39,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:50:39,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:50:39,018 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:50:39,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:50:39,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:50:39,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:50:39,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:50:39,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:50:39,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:50:39,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:50:39,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:50:39,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:50:39,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:50:39,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:50:39,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:50:39,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:50:39,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:50:39,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:50:39,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:50:39,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:50:39,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:50:39,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:50:39,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:50:39,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:50:39,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:50:39,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:50:39,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:50:39,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:50:39,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:50:39,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:50:39,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:50:39,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:50:39,516 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:50:39,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-09-24 23:50:39,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79b30da6d/41aac1a7d0214980a03319a988f4fcb1/FLAG838870dd9 [2020-09-24 23:50:40,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:50:40,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/splice-1.i [2020-09-24 23:50:40,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79b30da6d/41aac1a7d0214980a03319a988f4fcb1/FLAG838870dd9 [2020-09-24 23:50:40,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79b30da6d/41aac1a7d0214980a03319a988f4fcb1 [2020-09-24 23:50:40,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:50:40,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:50:40,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:50:40,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:50:40,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:50:40,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:50:40" (1/1) ... [2020-09-24 23:50:40,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c5ff9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:40, skipping insertion in model container [2020-09-24 23:50:40,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:50:40" (1/1) ... [2020-09-24 23:50:40,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:50:40,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:50:41,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:50:41,108 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:50:41,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:50:41,228 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:50:41,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41 WrapperNode [2020-09-24 23:50:41,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:50:41,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:50:41,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:50:41,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:50:41,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:50:41,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:50:41,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:50:41,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:50:41,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (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 23:50:41,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:50:41,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:50:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 23:50:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 23:50:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 23:50:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 23:50:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 23:50:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 23:50:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:50:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:50:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:50:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 23:50:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 23:50:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 23:50:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 23:50:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 23:50:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 23:50:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 23:50:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 23:50:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 23:50:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 23:50:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 23:50:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 23:50:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 23:50:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 23:50:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 23:50:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 23:50:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 23:50:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 23:50:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 23:50:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 23:50:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 23:50:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 23:50:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 23:50:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 23:50:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 23:50:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 23:50:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 23:50:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 23:50:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 23:50:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 23:50:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 23:50:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 23:50:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 23:50:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 23:50:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 23:50:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 23:50:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 23:50:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 23:50:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 23:50:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 23:50:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 23:50:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 23:50:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 23:50:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 23:50:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 23:50:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 23:50:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 23:50:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 23:50:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 23:50:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 23:50:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 23:50:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 23:50:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 23:50:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 23:50:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 23:50:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:50:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 23:50:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 23:50:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:50:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 23:50:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 23:50:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 23:50:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 23:50:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 23:50:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 23:50:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 23:50:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 23:50:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:50:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 23:50:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 23:50:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 23:50:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 23:50:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 23:50:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 23:50:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 23:50:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 23:50:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 23:50:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 23:50:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 23:50:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 23:50:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 23:50:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 23:50:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 23:50:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 23:50:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 23:50:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 23:50:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 23:50:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 23:50:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 23:50:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 23:50:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 23:50:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 23:50:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 23:50:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 23:50:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 23:50:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 23:50:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 23:50:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 23:50:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 23:50:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 23:50:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 23:50:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 23:50:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 23:50:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 23:50:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 23:50:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 23:50:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 23:50:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 23:50:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:50:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:50:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:50:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:50:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:50:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:50:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:50:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:50:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:50:41,790 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 23:50:42,052 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:50:42,052 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 23:50:42,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:50:42 BoogieIcfgContainer [2020-09-24 23:50:42,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:50:42,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:50:42,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:50:42,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:50:42,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:50:40" (1/3) ... [2020-09-24 23:50:42,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145acbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:50:42, skipping insertion in model container [2020-09-24 23:50:42,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (2/3) ... [2020-09-24 23:50:42,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145acbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:50:42, skipping insertion in model container [2020-09-24 23:50:42,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:50:42" (3/3) ... [2020-09-24 23:50:42,069 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-09-24 23:50:42,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:50:42,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:50:42,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:50:42,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:50:42,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:50:42,173 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:50:42,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:50:42,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:50:42,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:50:42,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:50:42,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:50:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-24 23:50:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 23:50:42,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:42,212 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] [2020-09-24 23:50:42,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:42,222 INFO L82 PathProgramCache]: Analyzing trace with hash 570656219, now seen corresponding path program 1 times [2020-09-24 23:50:42,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:42,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45751136] [2020-09-24 23:50:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:42,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:43,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:43,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 23:50:43,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:50:43,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-09-24 23:50:43,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:50:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 23:50:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:50:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:50:43,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:43,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:43,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:50:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:50:43,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:43,382 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 23:50:43,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45751136] [2020-09-24 23:50:43,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:43,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:50:43,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723443409] [2020-09-24 23:50:43,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:50:43,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:43,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:50:43,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:50:43,418 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 6 states. [2020-09-24 23:50:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:43,861 INFO L93 Difference]: Finished difference Result 169 states and 199 transitions. [2020-09-24 23:50:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:50:43,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 23:50:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:43,884 INFO L225 Difference]: With dead ends: 169 [2020-09-24 23:50:43,884 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 23:50:43,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:50:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 23:50:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-09-24 23:50:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 23:50:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-09-24 23:50:43,961 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 33 [2020-09-24 23:50:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:43,962 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-09-24 23:50:43,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:50:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-09-24 23:50:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 23:50:43,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:43,964 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:43,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:50:43,965 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:43,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:43,966 INFO L82 PathProgramCache]: Analyzing trace with hash 294194033, now seen corresponding path program 1 times [2020-09-24 23:50:43,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:43,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042179864] [2020-09-24 23:50:43,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:44,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:46,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:46,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 23:50:46,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:50:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2801 [2020-09-24 23:50:46,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:50:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 23:50:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 23:50:46,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:47,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:47,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:50:47,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:47,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:47,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:47,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042179864] [2020-09-24 23:50:47,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:50:47,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 23:50:47,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269047018] [2020-09-24 23:50:47,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 23:50:47,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:47,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 23:50:47,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-24 23:50:47,130 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 15 states. [2020-09-24 23:50:48,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:48,068 INFO L93 Difference]: Finished difference Result 185 states and 201 transitions. [2020-09-24 23:50:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:50:48,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-09-24 23:50:48,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:48,071 INFO L225 Difference]: With dead ends: 185 [2020-09-24 23:50:48,071 INFO L226 Difference]: Without dead ends: 164 [2020-09-24 23:50:48,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2020-09-24 23:50:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-24 23:50:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 102. [2020-09-24 23:50:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-24 23:50:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2020-09-24 23:50:48,086 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 50 [2020-09-24 23:50:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:48,087 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2020-09-24 23:50:48,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 23:50:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2020-09-24 23:50:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 23:50:48,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:48,089 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:48,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:50:48,090 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:48,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:48,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2092919149, now seen corresponding path program 1 times [2020-09-24 23:50:48,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:48,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908883669] [2020-09-24 23:50:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:52,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:52,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 23:50:52,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:50:52,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4204 [2020-09-24 23:50:52,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:50:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:50:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:52,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:52,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:50:52,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:50:52,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:52,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:52,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908883669] [2020-09-24 23:50:52,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:52,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:50:52,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197731223] [2020-09-24 23:50:52,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:50:52,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:52,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:50:52,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:50:52,366 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand 4 states. [2020-09-24 23:50:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:52,581 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions. [2020-09-24 23:50:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:50:52,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-09-24 23:50:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:52,584 INFO L225 Difference]: With dead ends: 212 [2020-09-24 23:50:52,585 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 23:50:52,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 23:50:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 23:50:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 121. [2020-09-24 23:50:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-24 23:50:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2020-09-24 23:50:52,602 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 50 [2020-09-24 23:50:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:52,602 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2020-09-24 23:50:52,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:50:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2020-09-24 23:50:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 23:50:52,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:52,611 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 23:50:52,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:50:52,611 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1840938300, now seen corresponding path program 1 times [2020-09-24 23:50:52,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:52,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290978314] [2020-09-24 23:50:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:50:52,655 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:50:52,655 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:50:52,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:50:52,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:50:52 BoogieIcfgContainer [2020-09-24 23:50:52,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:50:52,697 INFO L168 Benchmark]: Toolchain (without parser) took 12187.63 ms. Allocated memory was 139.5 MB in the beginning and 313.5 MB in the end (delta: 174.1 MB). Free memory was 101.9 MB in the beginning and 268.8 MB in the end (delta: -166.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:52,698 INFO L168 Benchmark]: CDTParser took 0.27 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:50:52,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.66 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 169.3 MB in the end (delta: -68.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:52,700 INFO L168 Benchmark]: Boogie Preprocessor took 72.88 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 166.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:52,701 INFO L168 Benchmark]: RCFGBuilder took 755.04 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 115.4 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:52,702 INFO L168 Benchmark]: TraceAbstraction took 10633.28 ms. Allocated memory was 202.9 MB in the beginning and 313.5 MB in the end (delta: 110.6 MB). Free memory was 114.8 MB in the beginning and 268.8 MB in the end (delta: -154.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:50:52,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.66 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 169.3 MB in the end (delta: -68.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.88 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 166.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 755.04 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 115.4 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10633.28 ms. Allocated memory was 202.9 MB in the beginning and 313.5 MB in the end (delta: 110.6 MB). Free memory was 114.8 MB in the beginning and 268.8 MB in the end (delta: -154.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a [L549] EXPR p->h [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 [L549] EXPR p->h [L549] COND FALSE !(p->h != 3) [L562] p = l1 [L563] COND TRUE p != 0 [L564] EXPR p->h [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 111 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 273 SDtfs, 443 SDslu, 833 SDs, 0 SdLazy, 731 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 24247 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...