/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:02:00,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:02:00,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:02:00,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:02:00,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:02:00,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:02:00,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:02:00,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:02:00,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:02:00,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:02:00,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:02:00,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:02:00,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:02:00,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:02:00,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:02:00,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:02:00,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:02:00,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:02:00,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:02:00,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:02:00,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:02:00,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:02:00,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:02:00,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:02:00,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:02:00,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:02:00,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:02:00,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:02:00,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:02:00,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:02:00,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:02:00,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:02:00,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:02:00,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:02:00,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:02:00,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:02:00,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:02:00,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:02:00,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:02:00,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:02:00,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:02:00,220 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 [2020-09-24 16:02:00,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:02:00,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:02:00,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:02:00,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:02:00,290 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:02:00,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:02:00,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:02:00,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:02:00,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:02:00,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:02:00,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:02:00,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:02:00,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:02:00,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:02:00,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:02:00,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:02:00,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:02:00,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:02:00,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:02:00,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:02:00,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:02:00,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:02:00,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:02:00,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:02:00,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:02:00,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:02:00,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:02:00,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:02:00,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:02:00,296 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:02:00,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:02:00,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:02:00,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:02:00,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:02:00,806 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:02:00,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-09-24 16:02:00,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55dfcaaf2/b63e348d58734a939dbbac80afd20d9e/FLAGe75e9bb45 [2020-09-24 16:02:01,530 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:02:01,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-09-24 16:02:01,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55dfcaaf2/b63e348d58734a939dbbac80afd20d9e/FLAGe75e9bb45 [2020-09-24 16:02:01,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55dfcaaf2/b63e348d58734a939dbbac80afd20d9e [2020-09-24 16:02:01,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:02:01,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:02:01,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:02:01,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:02:01,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:02:01,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:02:01" (1/1) ... [2020-09-24 16:02:01,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:01, skipping insertion in model container [2020-09-24 16:02:01,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:02:01" (1/1) ... [2020-09-24 16:02:01,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:02:01,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:02:02,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:02:02,421 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:02:02,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:02:02,546 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:02:02,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02 WrapperNode [2020-09-24 16:02:02,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:02:02,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:02:02,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:02:02,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:02:02,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (1/1) ... [2020-09-24 16:02:02,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (1/1) ... [2020-09-24 16:02:02,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (1/1) ... [2020-09-24 16:02:02,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (1/1) ... [2020-09-24 16:02:02,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (1/1) ... [2020-09-24 16:02:02,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (1/1) ... [2020-09-24 16:02:02,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (1/1) ... [2020-09-24 16:02:02,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:02:02,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:02:02,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:02:02,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:02:02,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (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 [2020-09-24 16:02:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:02:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:02:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:02:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:02:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:02:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:02:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:02:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:02:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:02:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:02:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:02:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:02:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:02:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:02:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:02:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:02:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:02:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:02:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:02:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:02:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:02:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:02:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:02:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:02:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:02:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:02:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:02:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:02:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:02:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:02:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:02:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:02:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:02:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:02:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:02:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:02:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:02:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:02:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:02:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:02:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:02:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:02:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:02:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:02:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:02:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:02:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:02:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:02:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:02:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:02:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:02:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:02:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:02:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:02:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:02:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:02:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:02:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:02:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:02:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:02:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:02:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:02:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:02:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:02:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:02:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:02:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:02:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:02:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:02:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:02:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:02:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:02:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:02:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:02:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:02:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:02:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:02:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:02:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:02:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:02:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:02:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:02:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:02:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:02:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:02:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:02:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:02:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:02:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:02:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:02:03,355 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:02:03,355 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-24 16:02:03,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:02:03 BoogieIcfgContainer [2020-09-24 16:02:03,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:02:03,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:02:03,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:02:03,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:02:03,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:02:01" (1/3) ... [2020-09-24 16:02:03,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546a63fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:02:03, skipping insertion in model container [2020-09-24 16:02:03,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:02" (2/3) ... [2020-09-24 16:02:03,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546a63fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:02:03, skipping insertion in model container [2020-09-24 16:02:03,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:02:03" (3/3) ... [2020-09-24 16:02:03,370 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-09-24 16:02:03,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:02:03,394 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-24 16:02:03,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-24 16:02:03,446 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:02:03,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:02:03,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:02:03,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:02:03,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:02:03,447 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:02:03,447 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:02:03,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:02:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-09-24 16:02:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 16:02:03,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:03,486 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] [2020-09-24 16:02:03,486 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:03,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1451075683, now seen corresponding path program 1 times [2020-09-24 16:02:03,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:03,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602108497] [2020-09-24 16:02:03,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,669 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:03,669 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,669 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 16:02:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:02:03,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:02:03,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:03,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,764 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:03,765 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,765 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,766 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:03,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:03,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 16:02:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:03,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602108497] [2020-09-24 16:02:03,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:03,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:02:03,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538698698] [2020-09-24 16:02:03,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:02:03,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:02:03,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:02:03,850 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-09-24 16:02:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:04,148 INFO L93 Difference]: Finished difference Result 176 states and 222 transitions. [2020-09-24 16:02:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:02:04,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-24 16:02:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:04,171 INFO L225 Difference]: With dead ends: 176 [2020-09-24 16:02:04,171 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 16:02:04,178 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 [2020-09-24 16:02:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 16:02:04,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-24 16:02:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 16:02:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-09-24 16:02:04,263 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 22 [2020-09-24 16:02:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:04,263 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-09-24 16:02:04,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:02:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-09-24 16:02:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 16:02:04,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:04,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:04,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:02:04,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:04,267 INFO L82 PathProgramCache]: Analyzing trace with hash -410944389, now seen corresponding path program 1 times [2020-09-24 16:02:04,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:04,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545915951] [2020-09-24 16:02:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:04,434 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:04,435 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:04,435 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:04,435 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 16:02:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 16:02:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:02:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 16:02:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:02:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:04,556 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:04,557 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:04,557 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:04,557 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:04,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:04,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:04,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:04,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545915951] [2020-09-24 16:02:04,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:04,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:02:04,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719972850] [2020-09-24 16:02:04,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:02:04,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:04,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:02:04,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:02:04,575 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 7 states. [2020-09-24 16:02:05,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:05,048 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2020-09-24 16:02:05,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:02:05,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 16:02:05,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:05,051 INFO L225 Difference]: With dead ends: 148 [2020-09-24 16:02:05,051 INFO L226 Difference]: Without dead ends: 146 [2020-09-24 16:02:05,052 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 [2020-09-24 16:02:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-24 16:02:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 81. [2020-09-24 16:02:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 16:02:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-09-24 16:02:05,070 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 23 [2020-09-24 16:02:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:05,070 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-09-24 16:02:05,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:02:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-09-24 16:02:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 16:02:05,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:05,073 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] [2020-09-24 16:02:05,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:02:05,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:05,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:05,075 INFO L82 PathProgramCache]: Analyzing trace with hash -922794179, now seen corresponding path program 1 times [2020-09-24 16:02:05,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:05,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859093821] [2020-09-24 16:02:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:05,160 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:05,160 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:05,161 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:05,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:05,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 16:02:05,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 16:02:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 16:02:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:05,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:05,241 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:05,242 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:05,242 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:05,242 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:05,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:05,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:05,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:05,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:05,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859093821] [2020-09-24 16:02:05,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:05,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:02:05,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956642949] [2020-09-24 16:02:05,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:02:05,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:05,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:02:05,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:02:05,254 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 6 states. [2020-09-24 16:02:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:05,493 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2020-09-24 16:02:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:02:05,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 16:02:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:05,495 INFO L225 Difference]: With dead ends: 142 [2020-09-24 16:02:05,495 INFO L226 Difference]: Without dead ends: 140 [2020-09-24 16:02:05,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:02:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-24 16:02:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 79. [2020-09-24 16:02:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 16:02:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-09-24 16:02:05,506 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 24 [2020-09-24 16:02:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:05,506 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-09-24 16:02:05,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:02:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-09-24 16:02:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 16:02:05,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:05,508 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] [2020-09-24 16:02:05,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:02:05,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:05,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1955200303, now seen corresponding path program 1 times [2020-09-24 16:02:05,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:05,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74924228] [2020-09-24 16:02:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:05,645 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:05,645 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:05,645 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:05,646 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:05,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 16:02:05,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 16:02:05,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:05,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 16:02:05,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 16:02:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:06,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:06,004 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:06,004 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:06,004 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:06,004 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:06,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:06,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:06,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:06,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:06,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74924228] [2020-09-24 16:02:06,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:06,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 16:02:06,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208862788] [2020-09-24 16:02:06,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:02:06,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:06,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:02:06,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:02:06,018 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 13 states. [2020-09-24 16:02:06,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:06,738 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-09-24 16:02:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:02:06,740 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-09-24 16:02:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:06,742 INFO L225 Difference]: With dead ends: 223 [2020-09-24 16:02:06,742 INFO L226 Difference]: Without dead ends: 177 [2020-09-24 16:02:06,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-24 16:02:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-24 16:02:06,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 93. [2020-09-24 16:02:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 16:02:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-09-24 16:02:06,755 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 31 [2020-09-24 16:02:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:06,755 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-09-24 16:02:06,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:02:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-09-24 16:02:06,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 16:02:06,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:06,757 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] [2020-09-24 16:02:06,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:02:06,757 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:06,758 INFO L82 PathProgramCache]: Analyzing trace with hash -2043057935, now seen corresponding path program 1 times [2020-09-24 16:02:06,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:06,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416106292] [2020-09-24 16:02:06,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:02:06,785 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:02:06,786 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:02:06,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:02:06,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:02:06 BoogieIcfgContainer [2020-09-24 16:02:06,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:02:06,817 INFO L168 Benchmark]: Toolchain (without parser) took 5006.84 ms. Allocated memory was 137.9 MB in the beginning and 252.2 MB in the end (delta: 114.3 MB). Free memory was 100.2 MB in the beginning and 203.7 MB in the end (delta: -103.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:06,818 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:02:06,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.96 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 169.0 MB in the end (delta: -69.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:06,820 INFO L168 Benchmark]: Boogie Preprocessor took 76.48 ms. Allocated memory is still 201.9 MB. Free memory was 169.0 MB in the beginning and 166.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:06,821 INFO L168 Benchmark]: RCFGBuilder took 736.41 ms. Allocated memory is still 201.9 MB. Free memory was 166.1 MB in the beginning and 116.1 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:06,822 INFO L168 Benchmark]: TraceAbstraction took 3451.95 ms. Allocated memory was 201.9 MB in the beginning and 252.2 MB in the end (delta: 50.3 MB). Free memory was 116.1 MB in the beginning and 203.7 MB in the end (delta: -87.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:02:06,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.96 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 169.0 MB in the end (delta: -69.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.48 ms. Allocated memory is still 201.9 MB. Free memory was 169.0 MB in the beginning and 166.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 736.41 ms. Allocated memory is still 201.9 MB. Free memory was 166.1 MB in the beginning and 116.1 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3451.95 ms. Allocated memory was 201.9 MB in the beginning and 252.2 MB in the end (delta: 50.3 MB). Free memory was 116.1 MB in the beginning and 203.7 MB in the end (delta: -87.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1015] EXPR x->data [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 94 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 344 SDtfs, 799 SDslu, 780 SDs, 0 SdLazy, 751 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 12595 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...