/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=DEEPEST --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/dll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:58:36,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:36,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:36,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:36,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:36,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:36,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:36,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:36,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:36,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:36,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:36,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:36,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:36,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:36,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:36,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:36,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:36,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:36,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:36,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:36,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:36,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:36,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:36,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:36,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:36,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:36,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:36,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:36,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:36,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:58:36,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:58:36,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:58:36,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:58:36,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:58:36,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:58:36,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:58:36,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:58:36,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:58:36,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:36,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:36,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:36,328 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 00:58:36,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:36,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:36,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:36,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:36,378 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:36,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:36,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:36,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:36,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:36,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:36,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:36,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:36,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:36,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:36,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:36,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:36,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:36,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:36,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:36,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:36,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:36,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:36,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:36,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:36,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:36,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:36,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:36,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:36,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:36,385 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:58:36,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:36,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:36,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:36,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:36,910 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:36,911 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-09-25 00:58:37,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e6711dcb/64e4b1b5f03e499b9acd059b327352aa/FLAG529819c2d [2020-09-25 00:58:37,706 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:37,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-09-25 00:58:37,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e6711dcb/64e4b1b5f03e499b9acd059b327352aa/FLAG529819c2d [2020-09-25 00:58:37,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e6711dcb/64e4b1b5f03e499b9acd059b327352aa [2020-09-25 00:58:37,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:37,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:37,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:37,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:37,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:37,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:37" (1/1) ... [2020-09-25 00:58:37,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33dfb059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:37, skipping insertion in model container [2020-09-25 00:58:37,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:37" (1/1) ... [2020-09-25 00:58:37,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:38,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:38,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:38,557 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:38,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:38,672 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:38,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38 WrapperNode [2020-09-25 00:58:38,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:38,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:38,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:38,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:38,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (1/1) ... [2020-09-25 00:58:38,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (1/1) ... [2020-09-25 00:58:38,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (1/1) ... [2020-09-25 00:58:38,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (1/1) ... [2020-09-25 00:58:38,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (1/1) ... [2020-09-25 00:58:38,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (1/1) ... [2020-09-25 00:58:38,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (1/1) ... [2020-09-25 00:58:38,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:38,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:38,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:38,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:38,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (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 00:58:38,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:38,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:38,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:58:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:58:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:58:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:58:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:58:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:58:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:58:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:58:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:58:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:58:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:58:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:58:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:58:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:58:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:58:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:58:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:58:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:58:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:58:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:58:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:58:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:58:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:58:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:58:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:58:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:58:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:58:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:58:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:58:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:58:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:58:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:58:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:58:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:58:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:58:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:58:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:58:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:58:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:58:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:58:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:58:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:58:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:58:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:58:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:58:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:58:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:58:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:58:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:58:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:58:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:58:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:58:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:58:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:58:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 00:58:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:58:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:58:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:58:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:58:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:58:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:58:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:58:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:58:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:58:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:58:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:58:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:58:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:58:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:58:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:58:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:58:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:58:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:58:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:58:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:58:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:58:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:58:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:58:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:58:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:58:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:58:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:58:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:58:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:58:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:58:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:58:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:58:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:58:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:58:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:58:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:58:38,849 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:58:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:58:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:58:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:58:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:58:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:58:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:58:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:58:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:58:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:58:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:58:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:58:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:58:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:58:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:58:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:58:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:58:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:58:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:39,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:39,550 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-25 00:58:39,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:39 BoogieIcfgContainer [2020-09-25 00:58:39,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:39,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:39,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:39,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:39,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:37" (1/3) ... [2020-09-25 00:58:39,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a963add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:39, skipping insertion in model container [2020-09-25 00:58:39,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:38" (2/3) ... [2020-09-25 00:58:39,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a963add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:39, skipping insertion in model container [2020-09-25 00:58:39,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:39" (3/3) ... [2020-09-25 00:58:39,566 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-09-25 00:58:39,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:39,586 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 00:58:39,609 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 00:58:39,642 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:39,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:39,642 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:39,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:39,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:39,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:39,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:39,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-09-25 00:58:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 00:58:39,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:39,682 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 00:58:39,683 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:39,692 INFO L82 PathProgramCache]: Analyzing trace with hash -740897811, now seen corresponding path program 1 times [2020-09-25 00:58:39,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:39,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125244720] [2020-09-25 00:58:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:40,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:40,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 00:58:40,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:40,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-09-25 00:58:40,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:58:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:40,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:58:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:40,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:40,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:40,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:58:40,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:40,766 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 00:58:40,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125244720] [2020-09-25 00:58:40,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:40,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:58:40,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511080207] [2020-09-25 00:58:40,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:58:40,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:40,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:58:40,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:58:40,800 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-09-25 00:58:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:41,035 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2020-09-25 00:58:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:58:41,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-25 00:58:41,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:41,049 INFO L225 Difference]: With dead ends: 179 [2020-09-25 00:58:41,050 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 00:58:41,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:58:41,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 00:58:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-09-25 00:58:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 00:58:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-09-25 00:58:41,102 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 20 [2020-09-25 00:58:41,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:41,102 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-09-25 00:58:41,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:58:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-09-25 00:58:41,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 00:58:41,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:41,104 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 00:58:41,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:58:41,105 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:41,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:41,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2066269805, now seen corresponding path program 1 times [2020-09-25 00:58:41,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:41,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13332311] [2020-09-25 00:58:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:41,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:58:41,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-25 00:58:41,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:58:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:58:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:58:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:41,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:41,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:41,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:41,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:58:41,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:41,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:41,586 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 00:58:41,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13332311] [2020-09-25 00:58:41,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:41,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 00:58:41,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018947166] [2020-09-25 00:58:41,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:58:41,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:41,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:58:41,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:58:41,591 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 9 states. [2020-09-25 00:58:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:42,052 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2020-09-25 00:58:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:58:42,054 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-25 00:58:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:42,058 INFO L225 Difference]: With dead ends: 155 [2020-09-25 00:58:42,059 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 00:58:42,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:58:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 00:58:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 85. [2020-09-25 00:58:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 00:58:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-09-25 00:58:42,090 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 22 [2020-09-25 00:58:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:42,094 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-09-25 00:58:42,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:58:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-09-25 00:58:42,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 00:58:42,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:42,096 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 00:58:42,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:58:42,096 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:42,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:42,097 INFO L82 PathProgramCache]: Analyzing trace with hash 807179936, now seen corresponding path program 1 times [2020-09-25 00:58:42,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:42,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409420374] [2020-09-25 00:58:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:42,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:42,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:42,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:58:42,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-09-25 00:58:42,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:58:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:58:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:58:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:43,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:43,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:43,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:58:43,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:43,228 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 00:58:43,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409420374] [2020-09-25 00:58:43,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:43,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 00:58:43,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061777150] [2020-09-25 00:58:43,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:58:43,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:43,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:58:43,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:58:43,231 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 9 states. [2020-09-25 00:58:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:44,052 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2020-09-25 00:58:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:58:44,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-09-25 00:58:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:44,058 INFO L225 Difference]: With dead ends: 182 [2020-09-25 00:58:44,058 INFO L226 Difference]: Without dead ends: 180 [2020-09-25 00:58:44,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:58:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-09-25 00:58:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 83. [2020-09-25 00:58:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 00:58:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-09-25 00:58:44,080 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 31 [2020-09-25 00:58:44,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:44,080 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-09-25 00:58:44,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:58:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-09-25 00:58:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 00:58:44,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:44,082 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] [2020-09-25 00:58:44,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:58:44,082 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:44,083 INFO L82 PathProgramCache]: Analyzing trace with hash -988969633, now seen corresponding path program 1 times [2020-09-25 00:58:44,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:44,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016161974] [2020-09-25 00:58:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:46,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:46,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 00:58:46,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:58:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2134 [2020-09-25 00:58:46,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:46,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:58:46,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:58:46,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:46,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:46,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:46,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:46,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:58:46,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:46,290 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 00:58:46,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016161974] [2020-09-25 00:58:46,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:46,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:58:46,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606229657] [2020-09-25 00:58:46,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:58:46,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:46,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:58:46,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:46,293 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 4 states. [2020-09-25 00:58:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:46,426 INFO L93 Difference]: Finished difference Result 204 states and 219 transitions. [2020-09-25 00:58:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:58:46,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-25 00:58:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:46,428 INFO L225 Difference]: With dead ends: 204 [2020-09-25 00:58:46,429 INFO L226 Difference]: Without dead ends: 142 [2020-09-25 00:58:46,430 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 00:58:46,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-25 00:58:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 103. [2020-09-25 00:58:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 00:58:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-09-25 00:58:46,440 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 36 [2020-09-25 00:58:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:46,440 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-09-25 00:58:46,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:58:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-09-25 00:58:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 00:58:46,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:46,442 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 00:58:46,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:58:46,443 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:46,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:46,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1230029085, now seen corresponding path program 1 times [2020-09-25 00:58:46,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:46,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030917640] [2020-09-25 00:58:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 00:58:48,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:58:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-09-25 00:58:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:58:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:58:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 00:58:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:48,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:48,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:48,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:48,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:58:48,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:48,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:48,768 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 00:58:48,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030917640] [2020-09-25 00:58:48,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:48,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 00:58:48,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608099746] [2020-09-25 00:58:48,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:58:48,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:48,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:58:48,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:58:48,771 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 12 states. [2020-09-25 00:58:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:49,356 INFO L93 Difference]: Finished difference Result 196 states and 207 transitions. [2020-09-25 00:58:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:58:49,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 00:58:49,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:49,358 INFO L225 Difference]: With dead ends: 196 [2020-09-25 00:58:49,358 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 00:58:49,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:58:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 00:58:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 111. [2020-09-25 00:58:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 00:58:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2020-09-25 00:58:49,370 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 37 [2020-09-25 00:58:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:49,371 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2020-09-25 00:58:49,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:58:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2020-09-25 00:58:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 00:58:49,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:49,374 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:49,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:58:49,374 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:49,375 INFO L82 PathProgramCache]: Analyzing trace with hash 626563183, now seen corresponding path program 1 times [2020-09-25 00:58:49,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:49,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429047549] [2020-09-25 00:58:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:50,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:50,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:58:50,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1541 [2020-09-25 00:58:50,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 00:58:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:58:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 00:58:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:51,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:51,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:58:51,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:51,309 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 00:58:51,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429047549] [2020-09-25 00:58:51,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:58:51,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 00:58:51,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647069830] [2020-09-25 00:58:51,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:58:51,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:51,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:58:51,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:58:51,312 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand 14 states. [2020-09-25 00:58:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:52,171 INFO L93 Difference]: Finished difference Result 178 states and 188 transitions. [2020-09-25 00:58:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:58:52,171 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-09-25 00:58:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:52,174 INFO L225 Difference]: With dead ends: 178 [2020-09-25 00:58:52,174 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 00:58:52,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-25 00:58:52,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 00:58:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 109. [2020-09-25 00:58:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 00:58:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2020-09-25 00:58:52,197 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 40 [2020-09-25 00:58:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:52,197 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2020-09-25 00:58:52,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:58:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2020-09-25 00:58:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 00:58:52,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:52,200 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 00:58:52,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:58:52,201 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:52,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:52,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1667005657, now seen corresponding path program 1 times [2020-09-25 00:58:52,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:52,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269720204] [2020-09-25 00:58:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:58:52,221 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:58:52,221 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:58:52,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:58:52,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:58:52 BoogieIcfgContainer [2020-09-25 00:58:52,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:58:52,255 INFO L168 Benchmark]: Toolchain (without parser) took 14296.09 ms. Allocated memory was 140.5 MB in the beginning and 332.9 MB in the end (delta: 192.4 MB). Free memory was 102.4 MB in the beginning and 155.6 MB in the end (delta: -53.2 MB). Peak memory consumption was 139.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:52,256 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:58:52,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.96 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 172.2 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:52,257 INFO L168 Benchmark]: Boogie Preprocessor took 77.32 ms. Allocated memory is still 204.5 MB. Free memory was 172.2 MB in the beginning and 168.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:52,258 INFO L168 Benchmark]: RCFGBuilder took 804.08 ms. Allocated memory is still 204.5 MB. Free memory was 168.9 MB in the beginning and 119.2 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:52,259 INFO L168 Benchmark]: TraceAbstraction took 12693.88 ms. Allocated memory was 204.5 MB in the beginning and 332.9 MB in the end (delta: 128.5 MB). Free memory was 119.2 MB in the beginning and 155.6 MB in the end (delta: -36.4 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:52,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.96 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 172.2 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.32 ms. Allocated memory is still 204.5 MB. Free memory was 172.2 MB in the beginning and 168.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 804.08 ms. Allocated memory is still 204.5 MB. Free memory was 168.9 MB in the beginning and 119.2 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12693.88 ms. Allocated memory was 204.5 MB in the beginning and 332.9 MB in the end (delta: 128.5 MB). Free memory was 119.2 MB in the beginning and 155.6 MB in the end (delta: -36.4 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = head [L988] head->data = 0 [L990] SLL* x = head; [L991] int state = 1; [L994] COND FALSE !(__VERIFIER_nondet_int()) [L1016] x->data = state [L1018] EXPR head->next [L1018] x = head->next [L1019] COND FALSE !(!(((void*)0) != x)) [L1021] EXPR x->data [L1021] COND TRUE x->data != 0 [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] EXPR x->data [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1023] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.5s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 503 SDtfs, 1148 SDslu, 1794 SDs, 0 SdLazy, 1235 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 326 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 41736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 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...