/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:05,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:05,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:05,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:05,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:05,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:05,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:05,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:05,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:05,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:05,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:05,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:05,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:05,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:05,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:05,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:05,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:05,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:05,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:05,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:05,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:05,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:05,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:05,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:05,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:05,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:05,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:05,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:05,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:05,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:05,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:05,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:05,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:05,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:05,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:05,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:05,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:05,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:05,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:05,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:05,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:05,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:28:05,482 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:05,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:05,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:05,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:05,485 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:05,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:05,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:05,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:05,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:05,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:05,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:05,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:05,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:05,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:05,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:05,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:05,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:05,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:05,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:05,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:05,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:05,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:05,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:05,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:05,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:05,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:05,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:05,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:05,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:05,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:28:05,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:05,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:05,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:05,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:05,975 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:05,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-09-25 13:28:06,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22a484cc/fff5ea4612674c98909090004ffde1a2/FLAG2de2f929f [2020-09-25 13:28:06,680 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:06,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-09-25 13:28:06,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22a484cc/fff5ea4612674c98909090004ffde1a2/FLAG2de2f929f [2020-09-25 13:28:06,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22a484cc/fff5ea4612674c98909090004ffde1a2 [2020-09-25 13:28:06,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:06,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:06,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:06,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:06,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:06,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:06" (1/1) ... [2020-09-25 13:28:06,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53926226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:06, skipping insertion in model container [2020-09-25 13:28:06,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:06" (1/1) ... [2020-09-25 13:28:06,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:07,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:07,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:07,539 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:07,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:07,644 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:07,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07 WrapperNode [2020-09-25 13:28:07,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:07,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:07,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:07,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:07,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (1/1) ... [2020-09-25 13:28:07,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (1/1) ... [2020-09-25 13:28:07,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (1/1) ... [2020-09-25 13:28:07,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (1/1) ... [2020-09-25 13:28:07,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (1/1) ... [2020-09-25 13:28:07,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (1/1) ... [2020-09-25 13:28:07,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (1/1) ... [2020-09-25 13:28:07,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:07,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:07,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:07,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:07,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:07,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:07,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:28:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:28:07,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:07,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:07,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:08,355 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:08,355 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-25 13:28:08,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:08 BoogieIcfgContainer [2020-09-25 13:28:08,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:08,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:08,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:08,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:08,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:06" (1/3) ... [2020-09-25 13:28:08,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee253bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:08, skipping insertion in model container [2020-09-25 13:28:08,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:07" (2/3) ... [2020-09-25 13:28:08,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee253bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:08, skipping insertion in model container [2020-09-25 13:28:08,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:08" (3/3) ... [2020-09-25 13:28:08,371 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-09-25 13:28:08,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:08,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 13:28:08,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 13:28:08,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:08,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:08,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:08,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:08,440 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:08,440 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:08,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:08,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-09-25 13:28:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 13:28:08,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:08,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:08,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:08,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1451075683, now seen corresponding path program 1 times [2020-09-25 13:28:08,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:08,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871430094] [2020-09-25 13:28:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:09,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:09,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:28:09,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:09,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-25 13:28:09,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:09,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:28:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:28:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:09,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:09,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:09,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:28:09,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:09,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:09,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871430094] [2020-09-25 13:28:09,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:09,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:09,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087561520] [2020-09-25 13:28:09,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:09,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:09,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:09,293 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 6 states. [2020-09-25 13:28:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:09,592 INFO L93 Difference]: Finished difference Result 253 states and 319 transitions. [2020-09-25 13:28:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:28:09,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-09-25 13:28:09,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:09,609 INFO L225 Difference]: With dead ends: 253 [2020-09-25 13:28:09,609 INFO L226 Difference]: Without dead ends: 142 [2020-09-25 13:28:09,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:28:09,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-25 13:28:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 81. [2020-09-25 13:28:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 13:28:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-09-25 13:28:09,673 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 22 [2020-09-25 13:28:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:09,673 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-09-25 13:28:09,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-09-25 13:28:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 13:28:09,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:09,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:09,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:09,676 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash -410944389, now seen corresponding path program 1 times [2020-09-25 13:28:09,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:09,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757796101] [2020-09-25 13:28:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:09,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:09,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:28:09,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:09,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 13:28:09,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:09,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:28:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:28:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:10,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:10,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:10,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:10,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:28:10,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:10,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:10,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757796101] [2020-09-25 13:28:10,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:10,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:10,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864004775] [2020-09-25 13:28:10,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:10,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:10,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:10,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:10,093 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 7 states. [2020-09-25 13:28:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:10,474 INFO L93 Difference]: Finished difference Result 144 states and 148 transitions. [2020-09-25 13:28:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:28:10,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 13:28:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:10,476 INFO L225 Difference]: With dead ends: 144 [2020-09-25 13:28:10,477 INFO L226 Difference]: Without dead ends: 142 [2020-09-25 13:28:10,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-25 13:28:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 79. [2020-09-25 13:28:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 13:28:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-09-25 13:28:10,489 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 23 [2020-09-25 13:28:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:10,489 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-09-25 13:28:10,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:10,489 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-09-25 13:28:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 13:28:10,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:10,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:10,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:10,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1955200303, now seen corresponding path program 1 times [2020-09-25 13:28:10,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:10,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521598820] [2020-09-25 13:28:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:28:11,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:11,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-25 13:28:11,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:11,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:28:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:28:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:11,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:11,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:11,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:11,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:28:11,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:11,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:11,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521598820] [2020-09-25 13:28:11,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:11,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 13:28:11,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855719458] [2020-09-25 13:28:11,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:28:11,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:11,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:28:11,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:11,560 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 13 states. [2020-09-25 13:28:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:12,276 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-09-25 13:28:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:28:12,277 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-09-25 13:28:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:12,279 INFO L225 Difference]: With dead ends: 223 [2020-09-25 13:28:12,280 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 13:28:12,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:28:12,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 13:28:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 93. [2020-09-25 13:28:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 13:28:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-09-25 13:28:12,304 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 31 [2020-09-25 13:28:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:12,305 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-09-25 13:28:12,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:28:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-09-25 13:28:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 13:28:12,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:12,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:12,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:12,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2043057935, now seen corresponding path program 1 times [2020-09-25 13:28:12,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:12,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227727590] [2020-09-25 13:28:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:28:12,332 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:28:12,333 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:28:12,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:12,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:28:12 BoogieIcfgContainer [2020-09-25 13:28:12,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:28:12,388 INFO L168 Benchmark]: Toolchain (without parser) took 5412.87 ms. Allocated memory was 138.4 MB in the beginning and 250.1 MB in the end (delta: 111.7 MB). Free memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: -35.6 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:12,389 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:28:12,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.72 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 168.2 MB in the end (delta: -68.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:12,393 INFO L168 Benchmark]: Boogie Preprocessor took 72.98 ms. Allocated memory is still 201.3 MB. Free memory was 168.2 MB in the beginning and 165.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:12,394 INFO L168 Benchmark]: RCFGBuilder took 642.48 ms. Allocated memory is still 201.3 MB. Free memory was 165.4 MB in the beginning and 115.6 MB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:12,395 INFO L168 Benchmark]: TraceAbstraction took 4010.92 ms. Allocated memory was 201.3 MB in the beginning and 250.1 MB in the end (delta: 48.8 MB). Free memory was 114.9 MB in the beginning and 136.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:12,405 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.72 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 168.2 MB in the end (delta: -68.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.98 ms. Allocated memory is still 201.3 MB. Free memory was 168.2 MB in the beginning and 165.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 642.48 ms. Allocated memory is still 201.3 MB. Free memory was 165.4 MB in the beginning and 115.6 MB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4010.92 ms. Allocated memory was 201.3 MB in the beginning and 250.1 MB in the end (delta: 48.8 MB). Free memory was 114.9 MB in the beginning and 136.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1015] EXPR x->data [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 94 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 256 SDtfs, 838 SDslu, 901 SDs, 0 SdLazy, 738 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 208 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 11429 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...