/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:35:48,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:35:48,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:35:48,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:35:48,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:35:48,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:35:48,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:35:48,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:35:48,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:35:48,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:35:48,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:35:48,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:35:48,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:35:48,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:35:48,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:35:48,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:35:48,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:35:48,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:35:48,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:35:48,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:35:48,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:35:48,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:35:48,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:35:48,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:35:48,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:35:48,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:35:48,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:35:48,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:35:48,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:35:48,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:35:48,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:35:48,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:35:48,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:35:48,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:35:48,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:35:48,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:35:48,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:35:48,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:35:48,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:35:48,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:35:48,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:35:48,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:35:48,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:35:48,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:35:48,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:35:48,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:35:48,374 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:35:48,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:35:48,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:35:48,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:35:48,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:35:48,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:35:48,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:35:48,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:35:48,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:35:48,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:35:48,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:35:48,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:35:48,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:35:48,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:35:48,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:35:48,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:35:48,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:35:48,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:35:48,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:35:48,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:35:48,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:35:48,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:35:48,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:35:48,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:35:48,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:35:48,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:35:48,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:35:48,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:35:48,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:35:48,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:35:48,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:35:48,764 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_append_unequal.i [2020-10-13 10:35:48,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/997eda674/03292393e56c4ccf9165a751e17c3dba/FLAG9f20904bd [2020-10-13 10:35:49,410 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:35:49,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_append_unequal.i [2020-10-13 10:35:49,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/997eda674/03292393e56c4ccf9165a751e17c3dba/FLAG9f20904bd [2020-10-13 10:35:49,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/997eda674/03292393e56c4ccf9165a751e17c3dba [2020-10-13 10:35:49,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:35:49,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:35:49,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:35:49,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:35:49,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:35:49,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:35:49" (1/1) ... [2020-10-13 10:35:49,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4f5049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:49, skipping insertion in model container [2020-10-13 10:35:49,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:35:49" (1/1) ... [2020-10-13 10:35:49,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:35:49,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:35:50,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:35:50,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:35:50,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:35:50,389 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:35:50,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50 WrapperNode [2020-10-13 10:35:50,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:35:50,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:35:50,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:35:50,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:35:50,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (1/1) ... [2020-10-13 10:35:50,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (1/1) ... [2020-10-13 10:35:50,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (1/1) ... [2020-10-13 10:35:50,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (1/1) ... [2020-10-13 10:35:50,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (1/1) ... [2020-10-13 10:35:50,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (1/1) ... [2020-10-13 10:35:50,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (1/1) ... [2020-10-13 10:35:50,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:35:50,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:35:50,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:35:50,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:35:50,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:35:50,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:35:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:35:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:35:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:35:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-13 10:35:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-13 10:35:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-13 10:35:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-13 10:35:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2020-10-13 10:35:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:35:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:35:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:35:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:35:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:35:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:35:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:35:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:35:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:35:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:35:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:35:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:35:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:35:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:35:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:35:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:35:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:35:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:35:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:35:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:35:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:35:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:35:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:35:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:35:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:35:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:35:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:35:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:35:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:35:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:35:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:35:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:35:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:35:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:35:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:35:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:35:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:35:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:35:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:35:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:35:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:35:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:35:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:35:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:35:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:35:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:35:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:35:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:35:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:35:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:35:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:35:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:35:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:35:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:35:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:35:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:35:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:35:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:35:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:35:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:35:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:35:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:35:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:35:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:35:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:35:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:35:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:35:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:35:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:35:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:35:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:35:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:35:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:35:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:35:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:35:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:35:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:35:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:35:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-13 10:35:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-13 10:35:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:35:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:35:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:35:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-13 10:35:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-13 10:35:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:35:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:35:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2020-10-13 10:35:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:35:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:35:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:35:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:35:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:35:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:35:50,998 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-13 10:35:51,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:35:51,201 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 10:35:51,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:35:51 BoogieIcfgContainer [2020-10-13 10:35:51,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:35:51,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:35:51,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:35:51,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:35:51,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:35:49" (1/3) ... [2020-10-13 10:35:51,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddf74f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:35:51, skipping insertion in model container [2020-10-13 10:35:51,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:50" (2/3) ... [2020-10-13 10:35:51,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddf74f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:35:51, skipping insertion in model container [2020-10-13 10:35:51,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:35:51" (3/3) ... [2020-10-13 10:35:51,215 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_append_unequal.i [2020-10-13 10:35:51,226 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:35:51,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:35:51,252 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:35:51,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:35:51,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:35:51,281 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:35:51,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:35:51,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:35:51,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:35:51,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:35:51,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:35:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-13 10:35:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:35:51,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:51,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:51,317 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:51,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash 656525943, now seen corresponding path program 1 times [2020-10-13 10:35:51,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:51,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61191779] [2020-10-13 10:35:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:51,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:52,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:35:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:35:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1939 [2020-10-13 10:35:53,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 10:35:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:35:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:53,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:53,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:53,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:53,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:35:53,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:53,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:53,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:35:53,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 10:35:53,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:35:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:53,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:53,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:53,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:53,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:53,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:35:53,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:53,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:53,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:53,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:35:53,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:53,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:35:53,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:35:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:53,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:53,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:53,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:53,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:53,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:35:53,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:53,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:35:53,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61191779] [2020-10-13 10:35:53,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:35:53,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:35:53,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458652534] [2020-10-13 10:35:53,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:35:53,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:53,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:35:53,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:35:53,745 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-10-13 10:35:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:53,988 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2020-10-13 10:35:53,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:35:53,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-13 10:35:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:54,000 INFO L225 Difference]: With dead ends: 101 [2020-10-13 10:35:54,000 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 10:35:54,004 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 10:35:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 10:35:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-13 10:35:54,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:35:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-13 10:35:54,049 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 36 [2020-10-13 10:35:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:54,054 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-13 10:35:54,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:35:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-13 10:35:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:35:54,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:54,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:54,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:35:54,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:54,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2091035926, now seen corresponding path program 1 times [2020-10-13 10:35:54,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:54,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949559502] [2020-10-13 10:35:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:56,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:56,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:35:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:35:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2402 [2020-10-13 10:35:56,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:35:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:35:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:35:56,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:56,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:56,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:35:56,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:56,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:56,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:56,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:56,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:56,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:35:56,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 10:35:56,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:35:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:35:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:35:56,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:56,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:56,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:56,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:56,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:35:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:35:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:35:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:56,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:56,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:35:56,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:56,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:35:56,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:35:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:56,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:56,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:56,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:35:56,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:35:56,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949559502] [2020-10-13 10:35:56,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:35:56,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:35:56,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794783186] [2020-10-13 10:35:56,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:35:56,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:56,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:35:56,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:35:56,701 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 7 states. [2020-10-13 10:35:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:56,926 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2020-10-13 10:35:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:35:56,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-13 10:35:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:56,929 INFO L225 Difference]: With dead ends: 72 [2020-10-13 10:35:56,929 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 10:35:56,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:35:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 10:35:56,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-13 10:35:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 10:35:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-13 10:35:56,941 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 36 [2020-10-13 10:35:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:56,941 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-13 10:35:56,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:35:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-13 10:35:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:35:56,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:56,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:56,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:35:56,944 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:56,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:56,945 INFO L82 PathProgramCache]: Analyzing trace with hash 364861950, now seen corresponding path program 1 times [2020-10-13 10:35:56,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:56,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246275480] [2020-10-13 10:35:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:58,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:58,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:35:58,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-13 10:35:58,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:35:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:35:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:35:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:58,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:58,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:58,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:58,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:35:58,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:58,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:59,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:59,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:35:59,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:59,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-13 10:35:59,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:35:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:35:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:35:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:59,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:59,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:59,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:59,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:35:59,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:59,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:35:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:59,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:59,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:59,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:59,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 10:35:59,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:35:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:35:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:35:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:59,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:59,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:35:59,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:59,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 10:35:59,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:35:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:35:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:35:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:59,473 ERROR L253 erpolLogProxyWrapper]: Interpolant 5 not inductive [2020-10-13 10:35:59,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:35:59,474 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 10:35:59,480 INFO L168 Benchmark]: Toolchain (without parser) took 9749.32 ms. Allocated memory was 139.5 MB in the beginning and 406.8 MB in the end (delta: 267.4 MB). Free memory was 100.6 MB in the beginning and 296.7 MB in the end (delta: -196.1 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:59,481 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-13 10:35:59,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.30 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 167.0 MB in the end (delta: -66.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:59,483 INFO L168 Benchmark]: Boogie Preprocessor took 74.69 ms. Allocated memory is still 202.9 MB. Free memory was 167.0 MB in the beginning and 164.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:59,484 INFO L168 Benchmark]: RCFGBuilder took 740.24 ms. Allocated memory is still 202.9 MB. Free memory was 164.1 MB in the beginning and 110.7 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:59,485 INFO L168 Benchmark]: TraceAbstraction took 8270.41 ms. Allocated memory was 202.9 MB in the beginning and 406.8 MB in the end (delta: 203.9 MB). Free memory was 110.7 MB in the beginning and 296.7 MB in the end (delta: -186.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:59,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.30 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 167.0 MB in the end (delta: -66.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.69 ms. Allocated memory is still 202.9 MB. Free memory was 167.0 MB in the beginning and 164.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.24 ms. Allocated memory is still 202.9 MB. Free memory was 164.1 MB in the beginning and 110.7 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8270.41 ms. Allocated memory was 202.9 MB in the beginning and 406.8 MB in the end (delta: 203.9 MB). Free memory was 110.7 MB in the beginning and 296.7 MB in the end (delta: -186.1 MB). Peak memory consumption was 17.9 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...