/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:39:21,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:39:21,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:39:21,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:39:21,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:39:21,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:39:21,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:39:21,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:39:21,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:39:21,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:39:21,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:39:21,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:39:21,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:39:21,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:39:21,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:39:21,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:39:21,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:39:21,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:39:21,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:39:21,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:39:21,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:39:21,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:39:21,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:39:21,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:39:21,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:39:21,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:39:21,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:39:21,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:39:21,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:39:21,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:39:21,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:39:21,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:39:21,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:39:21,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:39:21,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:39:21,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:39:21,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:39:21,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:39:21,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:39:21,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:39:21,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:39:21,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:39:21,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:39:21,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:39:21,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:39:21,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:39:21,348 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:39:21,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:39:21,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:39:21,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:39:21,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:39:21,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:39:21,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:39:21,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:39:21,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:39:21,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:39:21,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:39:21,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:39:21,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:39:21,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:39:21,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:39:21,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:39:21,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:39:21,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:39:21,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:39:21,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:39:21,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:39:21,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:39:21,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:39:21,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:39:21,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:39:21,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:39:21,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:39:21,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:39:21,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:39:21,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:39:21,680 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:39:21,681 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-13 10:39:21,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2edd3326/10b8eaa314a2495f8724e6f40b8ab1a4/FLAGcfff7ca7a [2020-10-13 10:39:22,207 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:39:22,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-13 10:39:22,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2edd3326/10b8eaa314a2495f8724e6f40b8ab1a4/FLAGcfff7ca7a [2020-10-13 10:39:22,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2edd3326/10b8eaa314a2495f8724e6f40b8ab1a4 [2020-10-13 10:39:22,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:39:22,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:39:22,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:39:22,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:39:22,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:39:22,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:39:22" (1/1) ... [2020-10-13 10:39:22,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d32dd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:22, skipping insertion in model container [2020-10-13 10:39:22,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:39:22" (1/1) ... [2020-10-13 10:39:22,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:39:22,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:39:23,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:39:23,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:39:23,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:39:23,144 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:39:23,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23 WrapperNode [2020-10-13 10:39:23,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:39:23,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:39:23,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:39:23,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:39:23,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (1/1) ... [2020-10-13 10:39:23,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (1/1) ... [2020-10-13 10:39:23,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (1/1) ... [2020-10-13 10:39:23,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (1/1) ... [2020-10-13 10:39:23,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (1/1) ... [2020-10-13 10:39:23,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (1/1) ... [2020-10-13 10:39:23,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (1/1) ... [2020-10-13 10:39:23,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:39:23,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:39:23,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:39:23,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:39:23,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:39:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:39:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:39:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:39:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:39:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-13 10:39:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-13 10:39:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-13 10:39:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-13 10:39:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2020-10-13 10:39:23,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:39:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:39:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:39:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:39:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:39:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:39:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:39:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:39:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:39:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:39:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:39:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:39:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:39:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:39:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:39:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:39:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:39:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:39:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:39:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:39:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:39:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:39:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:39:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:39:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:39:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:39:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:39:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:39:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:39:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:39:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:39:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:39:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:39:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:39:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:39:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:39:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:39:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:39:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:39:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:39:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:39:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:39:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:39:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:39:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:39:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:39:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:39:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:39:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:39:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:39:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:39:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:39:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:39:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:39:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:39:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:39:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:39:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:39:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:39:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:39:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:39:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:39:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:39:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:39:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:39:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:39:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:39:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:39:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:39:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:39:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:39:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:39:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:39:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:39:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:39:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:39:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:39:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:39:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:39:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:39:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:39:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:39:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:39:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:39:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:39:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:39:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:39:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:39:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:39:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:39:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:39:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:39:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:39:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:39:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:39:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:39:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:39:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:39:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:39:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:39:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-13 10:39:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-13 10:39:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:39:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:39:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:39:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-13 10:39:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-13 10:39:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:39:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:39:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2020-10-13 10:39:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:39:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:39:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:39:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:39:23,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:39:23,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:39:23,581 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-13 10:39:23,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:39:23,880 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-13 10:39:23,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:39:23 BoogieIcfgContainer [2020-10-13 10:39:23,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:39:23,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:39:23,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:39:23,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:39:23,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:39:22" (1/3) ... [2020-10-13 10:39:23,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:39:23, skipping insertion in model container [2020-10-13 10:39:23,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:23" (2/3) ... [2020-10-13 10:39:23,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:39:23, skipping insertion in model container [2020-10-13 10:39:23,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:39:23" (3/3) ... [2020-10-13 10:39:23,892 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2020-10-13 10:39:23,902 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:39:23,909 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:39:23,922 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:39:23,946 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:39:23,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:39:23,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:39:23,947 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:39:23,947 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:39:23,947 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:39:23,947 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:39:23,947 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:39:23,964 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-13 10:39:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:39:23,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:23,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:39:23,973 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:23,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1121781111, now seen corresponding path program 1 times [2020-10-13 10:39:23,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:23,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314531151] [2020-10-13 10:39:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:24,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:26,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:26,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:39:26,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:39:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2457 [2020-10-13 10:39:26,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 10:39:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:26,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:39:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:26,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:26,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:26,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:39:26,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:26,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:26,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:39:26,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:26,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:39:26,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:26,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:26,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:39:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:26,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:26,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:26,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:26,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:26,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:39:26,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:39:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:26,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:26,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:39:26,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:39:26,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:39:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:26,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:26,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:26,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:26,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:26,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:39:26,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:26,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:39:26,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314531151] [2020-10-13 10:39:26,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:39:26,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:39:26,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050551502] [2020-10-13 10:39:26,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:39:26,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:26,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:39:26,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:39:26,864 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-13 10:39:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:27,054 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2020-10-13 10:39:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:39:27,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-13 10:39:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:27,065 INFO L225 Difference]: With dead ends: 107 [2020-10-13 10:39:27,066 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 10:39:27,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:39:27,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 10:39:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-13 10:39:27,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 10:39:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-13 10:39:27,114 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 37 [2020-10-13 10:39:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:27,116 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-13 10:39:27,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:39:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-13 10:39:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:39:27,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:27,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:39:27,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:39:27,119 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:27,120 INFO L82 PathProgramCache]: Analyzing trace with hash 699165091, now seen corresponding path program 1 times [2020-10-13 10:39:27,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:27,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497636919] [2020-10-13 10:39:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:27,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:29,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:29,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:39:29,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:39:29,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2095 [2020-10-13 10:39:29,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:29,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:29,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:39:29,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:39:29,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:29,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:29,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:29,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:29,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:29,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:39:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:29,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:29,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:29,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:39:29,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:39:29,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:39:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:39:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:29,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:29,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:29,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:39:29,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:39:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:39:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:39:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:29,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:29,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:29,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:39:29,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:29,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:39:29,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:39:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:29,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:29,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:29,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:29,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:29,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:39:29,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:29,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:29,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:29,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:29,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:39:29,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497636919] [2020-10-13 10:39:29,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:39:29,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:39:29,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086402236] [2020-10-13 10:39:29,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:39:29,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:29,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:39:29,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:39:29,398 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 7 states. [2020-10-13 10:39:29,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:29,573 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2020-10-13 10:39:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:39:29,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-13 10:39:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:29,575 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:39:29,576 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 10:39:29,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:39:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 10:39:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-13 10:39:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:39:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-13 10:39:29,587 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2020-10-13 10:39:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:29,587 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-13 10:39:29,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:39:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-13 10:39:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:39:29,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:29,589 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:39:29,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:39:29,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:29,590 INFO L82 PathProgramCache]: Analyzing trace with hash 983235931, now seen corresponding path program 1 times [2020-10-13 10:39:29,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:29,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629370138] [2020-10-13 10:39:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:32,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:39:32,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:39:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3191 [2020-10-13 10:39:32,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:39:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:39:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:39:32,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:32,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:32,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:32,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:32,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:32,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:39:32,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:39:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 10:39:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:39:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:39:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:33,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:33,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:33,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:33,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:39:33,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:33,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:39:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:33,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:33,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:33,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 10:39:33,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:39:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:39:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:33,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:33,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:33,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:39:33,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:33,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 10:39:33,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:39:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:39:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:39:33,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:33,435 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 3: A-local: [(sll_circular_append_~head.base_0 Int)], B-local: []. [2020-10-13 10:39:33,436 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 4: A-local: [(sll_circular_append_~head.base_0 Int)], B-local: []. [2020-10-13 10:39:33,437 ERROR L253 erpolLogProxyWrapper]: Interpolant 5 not inductive [2020-10-13 10:39:33,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:39:33,438 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-13 10:39:33,446 INFO L168 Benchmark]: Toolchain (without parser) took 10911.12 ms. Allocated memory was 147.3 MB in the beginning and 485.5 MB in the end (delta: 338.2 MB). Free memory was 100.5 MB in the beginning and 355.4 MB in the end (delta: -254.9 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:39:33,447 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:39:33,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.78 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 100.3 MB in the beginning and 169.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:39:33,450 INFO L168 Benchmark]: Boogie Preprocessor took 64.49 ms. Allocated memory is still 204.5 MB. Free memory was 169.6 MB in the beginning and 166.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:39:33,451 INFO L168 Benchmark]: RCFGBuilder took 673.63 ms. Allocated memory is still 204.5 MB. Free memory was 166.2 MB in the beginning and 113.2 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:39:33,455 INFO L168 Benchmark]: TraceAbstraction took 9555.78 ms. Allocated memory was 204.5 MB in the beginning and 485.5 MB in the end (delta: 281.0 MB). Free memory was 113.2 MB in the beginning and 355.4 MB in the end (delta: -242.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:39:33,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 612.78 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 100.3 MB in the beginning and 169.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.49 ms. Allocated memory is still 204.5 MB. Free memory was 169.6 MB in the beginning and 166.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 673.63 ms. Allocated memory is still 204.5 MB. Free memory was 166.2 MB in the beginning and 113.2 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9555.78 ms. Allocated memory was 204.5 MB in the beginning and 485.5 MB in the end (delta: 281.0 MB). Free memory was 113.2 MB in the beginning and 355.4 MB in the end (delta: -242.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...