/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=WIDEST --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 [2020-09-25 03:13:40,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:13:40,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:13:40,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:13:40,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:13:40,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:13:40,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:13:40,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:13:40,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:13:40,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:13:40,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:13:40,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:13:40,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:13:40,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:13:40,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:13:40,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:13:40,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:13:40,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:13:40,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:13:40,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:13:40,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:13:40,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:13:40,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:13:40,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:13:40,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:13:40,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:13:40,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:13:40,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:13:40,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:13:40,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:13:40,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:13:40,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:13:40,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:13:40,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:13:40,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:13:40,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:13:40,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:13:40,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:13:40,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:13:40,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:13:40,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:13:40,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:13:40,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:13:40,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:13:40,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:13:40,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:13:40,916 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:13:40,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:13:40,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:13:40,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:13:40,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:13:40,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:13:40,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:13:40,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:13:40,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:13:40,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:13:40,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:13:40,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:13:40,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:13:40,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:13:40,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:13:40,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:13:40,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:13:40,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:40,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:13:40,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:13:40,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:13:40,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:13:40,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:13:40,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:13:40,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:13:40,923 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:13:41,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:13:41,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:13:41,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:13:41,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:13:41,423 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:13:41,424 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-09-25 03:13:41,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/674f2cf66/3bad904657b74784899aaf60b76106b6/FLAG861ce072c [2020-09-25 03:13:42,199 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:13:42,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/splice-1.i [2020-09-25 03:13:42,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/674f2cf66/3bad904657b74784899aaf60b76106b6/FLAG861ce072c [2020-09-25 03:13:42,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/674f2cf66/3bad904657b74784899aaf60b76106b6 [2020-09-25 03:13:42,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:13:42,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:13:42,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:42,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:13:42,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:13:42,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:42" (1/1) ... [2020-09-25 03:13:42,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c488e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:42, skipping insertion in model container [2020-09-25 03:13:42,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:42" (1/1) ... [2020-09-25 03:13:42,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:13:42,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:13:43,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:43,016 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:13:43,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:43,123 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:13:43,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43 WrapperNode [2020-09-25 03:13:43,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:43,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:13:43,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:13:43,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:13:43,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (1/1) ... [2020-09-25 03:13:43,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (1/1) ... [2020-09-25 03:13:43,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (1/1) ... [2020-09-25 03:13:43,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (1/1) ... [2020-09-25 03:13:43,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (1/1) ... [2020-09-25 03:13:43,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (1/1) ... [2020-09-25 03:13:43,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (1/1) ... [2020-09-25 03:13:43,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:13:43,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:13:43,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:13:43,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:13:43,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:43,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 03:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 03:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 03:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 03:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 03:13:43,312 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 03:13:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:13:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:13:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:13:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:13:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:13:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:13:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:13:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:13:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:13:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:13:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:13:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:13:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:13:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:13:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 03:13:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 03:13:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 03:13:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 03:13:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 03:13:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:13:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:13:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:13:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:13:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:13:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:13:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:13:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:13:43,323 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:13:43,323 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:13:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:13:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:13:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:13:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:13:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:13:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:13:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:13:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:13:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:13:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:13:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:13:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:13:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:13:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:13:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:13:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:13:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:13:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:13:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:13:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:13:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:13:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:13:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:13:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:13:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:13:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:13:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:13:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:13:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:13:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:13:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:13:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:13:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:13:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:13:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:13:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:13:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:13:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:13:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:13:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:13:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:13:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:13:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:13:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:13:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:13:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:13:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:13:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:13:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:13:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:13:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:13:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:13:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:13:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:13:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:13:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:13:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:13:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:13:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:13:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:13:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:13:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:13:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:13:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:13:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:13:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:13:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:13:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:13:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:13:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:13:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:13:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:13:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:13:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:13:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:13:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:13:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 03:13:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:13:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:13:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:13:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:13:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:13:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:13:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:13:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:13:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:13:43,738 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 03:13:43,985 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:13:43,985 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 03:13:43,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:43 BoogieIcfgContainer [2020-09-25 03:13:43,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:13:43,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:13:43,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:13:44,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:13:44,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:13:42" (1/3) ... [2020-09-25 03:13:44,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd0b0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:44, skipping insertion in model container [2020-09-25 03:13:44,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:43" (2/3) ... [2020-09-25 03:13:44,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd0b0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:44, skipping insertion in model container [2020-09-25 03:13:44,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:43" (3/3) ... [2020-09-25 03:13:44,009 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-09-25 03:13:44,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:13:44,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:13:44,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:13:44,107 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:13:44,107 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:13:44,107 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:13:44,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:13:44,108 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:13:44,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:13:44,108 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:13:44,108 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:13:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-25 03:13:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:13:44,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:44,157 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] [2020-09-25 03:13:44,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:44,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:44,166 INFO L82 PathProgramCache]: Analyzing trace with hash 570656219, now seen corresponding path program 1 times [2020-09-25 03:13:44,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:44,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074942529] [2020-09-25 03:13:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:45,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:45,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 03:13:45,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-09-25 03:13:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:13:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 03:13:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:13:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:13:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:45,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:45,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:45,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:45,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:13:45,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:45,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074942529] [2020-09-25 03:13:45,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:45,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:13:45,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088203620] [2020-09-25 03:13:45,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:13:45,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:45,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:13:45,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:45,363 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 5 states. [2020-09-25 03:13:45,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:45,646 INFO L93 Difference]: Finished difference Result 170 states and 201 transitions. [2020-09-25 03:13:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:13:45,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-25 03:13:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:45,661 INFO L225 Difference]: With dead ends: 170 [2020-09-25 03:13:45,662 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 03:13:45,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:13:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 03:13:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2020-09-25 03:13:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 03:13:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-09-25 03:13:45,740 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 33 [2020-09-25 03:13:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:45,740 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-09-25 03:13:45,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:13:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-09-25 03:13:45,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 03:13:45,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:45,743 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] [2020-09-25 03:13:45,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:13:45,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:45,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash 2072796657, now seen corresponding path program 1 times [2020-09-25 03:13:45,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:45,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177384049] [2020-09-25 03:13:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:13:46,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-09-25 03:13:46,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 03:13:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:13:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:46,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:46,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:46,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:13:46,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:46,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177384049] [2020-09-25 03:13:46,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:46,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:46,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465606116] [2020-09-25 03:13:46,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:46,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:46,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:46,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:46,834 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 7 states. [2020-09-25 03:13:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:47,104 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-09-25 03:13:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:13:47,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-09-25 03:13:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:47,107 INFO L225 Difference]: With dead ends: 114 [2020-09-25 03:13:47,107 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 03:13:47,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:13:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 03:13:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2020-09-25 03:13:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 03:13:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-09-25 03:13:47,119 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 39 [2020-09-25 03:13:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:47,119 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-09-25 03:13:47,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-09-25 03:13:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:13:47,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:47,122 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] [2020-09-25 03:13:47,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:13:47,122 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2065103565, now seen corresponding path program 1 times [2020-09-25 03:13:47,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:47,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529413529] [2020-09-25 03:13:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:47,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:47,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:13:47,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:47,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-25 03:13:47,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:13:47,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:13:47,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:47,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:47,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:47,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:47,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:47,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:47,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:13:47,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:47,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529413529] [2020-09-25 03:13:47,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:47,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:47,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092895960] [2020-09-25 03:13:47,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:47,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:47,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:47,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:47,650 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 7 states. [2020-09-25 03:13:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:47,897 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2020-09-25 03:13:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:13:47,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-09-25 03:13:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:47,899 INFO L225 Difference]: With dead ends: 170 [2020-09-25 03:13:47,899 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 03:13:47,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 03:13:47,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2020-09-25 03:13:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 03:13:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2020-09-25 03:13:47,910 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 48 [2020-09-25 03:13:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:47,910 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2020-09-25 03:13:47,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2020-09-25 03:13:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 03:13:47,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:47,912 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] [2020-09-25 03:13:47,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:13:47,913 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:47,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:47,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1840938300, now seen corresponding path program 1 times [2020-09-25 03:13:47,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:47,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666185086] [2020-09-25 03:13:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:13:47,942 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:13:47,942 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:13:47,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:13:47,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:13:47 BoogieIcfgContainer [2020-09-25 03:13:47,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:13:47,973 INFO L168 Benchmark]: Toolchain (without parser) took 5526.46 ms. Allocated memory was 141.0 MB in the beginning and 245.9 MB in the end (delta: 104.9 MB). Free memory was 103.0 MB in the beginning and 164.8 MB in the end (delta: -61.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:47,974 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:13:47,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.89 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 168.9 MB in the end (delta: -66.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:47,976 INFO L168 Benchmark]: Boogie Preprocessor took 78.32 ms. Allocated memory is still 205.0 MB. Free memory was 168.9 MB in the beginning and 166.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:47,977 INFO L168 Benchmark]: RCFGBuilder took 792.88 ms. Allocated memory is still 205.0 MB. Free memory was 166.0 MB in the beginning and 114.7 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:47,978 INFO L168 Benchmark]: TraceAbstraction took 3971.09 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 114.7 MB in the beginning and 164.8 MB in the end (delta: -50.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:13:47,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.89 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 168.9 MB in the end (delta: -66.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.32 ms. Allocated memory is still 205.0 MB. Free memory was 168.9 MB in the beginning and 166.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 792.88 ms. Allocated memory is still 205.0 MB. Free memory was 166.0 MB in the beginning and 114.7 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3971.09 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 114.7 MB in the beginning and 164.8 MB in the end (delta: -50.0 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: 3.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 236 SDtfs, 104 SDslu, 633 SDs, 0 SdLazy, 458 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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, 37 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 13130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...