/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=0.5 --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-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:35:40,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:35:40,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:35:40,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:35:40,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:35:40,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:35:40,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:35:40,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:35:40,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:35:40,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:35:40,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:35:40,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:35:40,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:35:40,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:35:40,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:35:40,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:35:40,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:35:40,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:35:40,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:35:40,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:35:40,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:35:40,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:35:40,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:35:40,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:35:40,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:35:40,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:35:40,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:35:40,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:35:40,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:35:40,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:35:40,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:35:40,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:35:40,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:35:40,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:35:40,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:35:40,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:35:40,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:35:40,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:35:40,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:35:40,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:35:40,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:35:40,484 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 14:35:40,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:35:40,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:35:40,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:35:40,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:35:40,542 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:35:40,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:35:40,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:35:40,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:35:40,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:35:40,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:35:40,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:35:40,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:35:40,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:35:40,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:35:40,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:35:40,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:35:40,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:35:40,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:35:40,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:35:40,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:35:40,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:35:40,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:35:40,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:35:40,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:35:40,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:35:40,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:35:40,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:35:40,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:35:40,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:35:40,550 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:35:41,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:35:41,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:35:41,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:35:41,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:35:41,083 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:35:41,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-25 14:35:41,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06db9a936/d1890ec0d5254077adfd8f2ee7f53a95/FLAG3161feb77 [2020-09-25 14:35:41,812 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:35:41,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-25 14:35:41,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06db9a936/d1890ec0d5254077adfd8f2ee7f53a95/FLAG3161feb77 [2020-09-25 14:35:42,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06db9a936/d1890ec0d5254077adfd8f2ee7f53a95 [2020-09-25 14:35:42,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:35:42,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:35:42,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:42,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:35:42,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:35:42,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547dd626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42, skipping insertion in model container [2020-09-25 14:35:42,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:35:42,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:35:42,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:42,707 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:35:42,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:42,839 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:35:42,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42 WrapperNode [2020-09-25 14:35:42,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:42,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:35:42,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:35:42,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:35:42,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:35:42,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:35:42,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:35:42,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:35:42,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (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 14:35:42,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:35:42,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:35:42,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:35:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:35:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:35:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:35:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:35:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:35:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:35:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:35:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:35:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:35:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:35:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:35:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:35:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:35:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:35:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:35:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:35:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:35:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:35:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:35:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:35:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:35:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:35:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:35:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:35:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:35:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:35:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:35:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:35:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:35:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:35:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:35:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:35:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:35:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:35:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:35:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:35:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:35:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:35:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:35:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:35:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:35:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:35:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:35:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:35:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:35:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:35:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:35:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:35:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:35:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:35:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:35:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:35:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:35:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:35:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:35:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:35:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:35:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:35:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:35:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:35:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:35:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:35:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:35:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:35:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:35:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:35:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:35:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:35:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:35:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:35:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:35:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:35:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:35:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:35:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:35:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:35:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:35:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:35:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:35:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:35:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:35:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:35:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:35:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:35:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:35:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:35:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:35:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:35:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:35:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:35:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:35:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:35:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:35:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:35:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:35:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:35:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:35:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:35:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:35:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:35:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:35:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:35:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:35:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:35:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:35:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:35:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:35:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:35:43,565 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:35:43,566 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-25 14:35:43,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:43 BoogieIcfgContainer [2020-09-25 14:35:43,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:35:43,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:35:43,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:35:43,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:35:43,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:35:42" (1/3) ... [2020-09-25 14:35:43,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a8bbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:43, skipping insertion in model container [2020-09-25 14:35:43,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (2/3) ... [2020-09-25 14:35:43,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a8bbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:43, skipping insertion in model container [2020-09-25 14:35:43,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:43" (3/3) ... [2020-09-25 14:35:43,582 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-09-25 14:35:43,594 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:35:43,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 14:35:43,630 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 14:35:43,664 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:35:43,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:35:43,665 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:35:43,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:35:43,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:35:43,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:35:43,665 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:35:43,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:35:43,694 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-09-25 14:35:43,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 14:35:43,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:43,705 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] [2020-09-25 14:35:43,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:43,714 INFO L82 PathProgramCache]: Analyzing trace with hash -976698803, now seen corresponding path program 1 times [2020-09-25 14:35:43,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:43,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122071349] [2020-09-25 14:35:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:44,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:44,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:35:44,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:44,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-09-25 14:35:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:44,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:35:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:35:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:35:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:44,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:44,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:44,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:44,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:35:44,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:44,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:44,785 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 14:35:44,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122071349] [2020-09-25 14:35:44,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:44,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:35:44,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086339224] [2020-09-25 14:35:44,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:35:44,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:44,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:35:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:35:44,819 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 9 states. [2020-09-25 14:35:45,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:45,389 INFO L93 Difference]: Finished difference Result 271 states and 328 transitions. [2020-09-25 14:35:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:35:45,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-25 14:35:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:45,407 INFO L225 Difference]: With dead ends: 271 [2020-09-25 14:35:45,407 INFO L226 Difference]: Without dead ends: 147 [2020-09-25 14:35:45,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:35:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-25 14:35:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 82. [2020-09-25 14:35:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 14:35:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-09-25 14:35:45,476 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 20 [2020-09-25 14:35:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:45,477 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-09-25 14:35:45,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:35:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-09-25 14:35:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 14:35:45,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:45,479 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] [2020-09-25 14:35:45,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:35:45,480 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:45,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:45,480 INFO L82 PathProgramCache]: Analyzing trace with hash 340604940, now seen corresponding path program 1 times [2020-09-25 14:35:45,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:45,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057486891] [2020-09-25 14:35:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:45,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:45,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:45,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 14:35:45,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 14:35:45,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:45,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:35:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:35:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:35:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:45,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:45,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:45,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:35:45,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:45,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:45,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:45,856 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 14:35:45,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057486891] [2020-09-25 14:35:45,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:45,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:35:45,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563891360] [2020-09-25 14:35:45,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:35:45,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:45,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:35:45,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:35:45,860 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 7 states. [2020-09-25 14:35:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:46,235 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-09-25 14:35:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:35:46,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-25 14:35:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:46,238 INFO L225 Difference]: With dead ends: 118 [2020-09-25 14:35:46,238 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 14:35:46,239 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 14:35:46,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 14:35:46,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-09-25 14:35:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 14:35:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-09-25 14:35:46,249 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 28 [2020-09-25 14:35:46,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:46,250 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-09-25 14:35:46,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:35:46,250 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-09-25 14:35:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:35:46,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:46,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:46,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:35:46,252 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:46,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1933129776, now seen corresponding path program 1 times [2020-09-25 14:35:46,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:46,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279796437] [2020-09-25 14:35:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:48,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 14:35:48,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:35:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2002 [2020-09-25 14:35:48,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:48,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:35:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:35:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:35:48,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:48,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:35:48,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:48,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:48,338 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 14:35:48,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279796437] [2020-09-25 14:35:48,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:48,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:35:48,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464947192] [2020-09-25 14:35:48,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:35:48,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:48,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:35:48,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:35:48,341 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 4 states. [2020-09-25 14:35:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:48,483 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2020-09-25 14:35:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:35:48,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-25 14:35:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:48,485 INFO L225 Difference]: With dead ends: 195 [2020-09-25 14:35:48,486 INFO L226 Difference]: Without dead ends: 136 [2020-09-25 14:35:48,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:35:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-25 14:35:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-09-25 14:35:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-25 14:35:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-09-25 14:35:48,497 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 33 [2020-09-25 14:35:48,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:48,498 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-09-25 14:35:48,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:35:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-09-25 14:35:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 14:35:48,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:48,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:48,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:35:48,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1127481847, now seen corresponding path program 1 times [2020-09-25 14:35:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:48,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116608849] [2020-09-25 14:35:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:48,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:49,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:50,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:50,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:35:50,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:35:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2173 [2020-09-25 14:35:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:50,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:35:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:35:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:35:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:50,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:50,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:50,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:50,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:35:50,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:50,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:50,948 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 14:35:50,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116608849] [2020-09-25 14:35:50,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:50,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 14:35:50,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120050400] [2020-09-25 14:35:50,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:35:50,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:50,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:35:50,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:35:50,952 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 12 states. [2020-09-25 14:35:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:51,488 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2020-09-25 14:35:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:35:51,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 14:35:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:51,490 INFO L225 Difference]: With dead ends: 190 [2020-09-25 14:35:51,490 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 14:35:51,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:35:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 14:35:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 105. [2020-09-25 14:35:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 14:35:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-09-25 14:35:51,514 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 37 [2020-09-25 14:35:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:51,515 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-09-25 14:35:51,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:35:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-09-25 14:35:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 14:35:51,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:51,518 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:51,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:35:51,518 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:51,518 INFO L82 PathProgramCache]: Analyzing trace with hash 821991267, now seen corresponding path program 1 times [2020-09-25 14:35:51,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:51,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910187935] [2020-09-25 14:35:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:53,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:53,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:35:53,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:53,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-09-25 14:35:53,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:53,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:35:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:35:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:53,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:35:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:53,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:53,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910187935] [2020-09-25 14:35:53,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:35:53,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:35:53,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370286354] [2020-09-25 14:35:53,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:35:53,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:53,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:35:53,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:35:53,410 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 14 states. [2020-09-25 14:35:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:54,500 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2020-09-25 14:35:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:35:54,500 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-09-25 14:35:54,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:54,502 INFO L225 Difference]: With dead ends: 206 [2020-09-25 14:35:54,504 INFO L226 Difference]: Without dead ends: 204 [2020-09-25 14:35:54,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:35:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-25 14:35:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 134. [2020-09-25 14:35:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 14:35:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-09-25 14:35:54,524 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 37 [2020-09-25 14:35:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:54,524 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-09-25 14:35:54,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:35:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-09-25 14:35:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 14:35:54,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:54,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:54,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:35:54,527 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1168005107, now seen corresponding path program 1 times [2020-09-25 14:35:54,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:54,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545356187] [2020-09-25 14:35:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:35:54,558 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:35:54,558 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:35:54,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:35:54,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:35:54 BoogieIcfgContainer [2020-09-25 14:35:54,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:35:54,589 INFO L168 Benchmark]: Toolchain (without parser) took 12512.36 ms. Allocated memory was 138.9 MB in the beginning and 309.3 MB in the end (delta: 170.4 MB). Free memory was 99.9 MB in the beginning and 152.2 MB in the end (delta: -52.2 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:54,590 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 14:35:54,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.76 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 170.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:54,592 INFO L168 Benchmark]: Boogie Preprocessor took 75.21 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 167.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:54,593 INFO L168 Benchmark]: RCFGBuilder took 655.37 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 118.9 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:54,594 INFO L168 Benchmark]: TraceAbstraction took 11012.70 ms. Allocated memory was 202.9 MB in the beginning and 309.3 MB in the end (delta: 106.4 MB). Free memory was 117.9 MB in the beginning and 152.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:54,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.76 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 170.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.21 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 167.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 655.37 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 118.9 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11012.70 ms. Allocated memory was 202.9 MB in the beginning and 309.3 MB in the end (delta: 106.4 MB). Free memory was 117.9 MB in the beginning and 152.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = head [L987] head->data = 0 [L989] SLL* x = head; [L990] int state = 1; [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] x->data = state [L1016] EXPR head->next [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND TRUE x->data != 0 [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] EXPR x->data [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 425 SDtfs, 1117 SDslu, 1904 SDs, 0 SdLazy, 1098 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=5, 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, 5 MinimizatonAttempts, 265 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 48636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...