/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:29:59,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:29:59,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:30:00,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:30:00,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:30:00,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:30:00,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:30:00,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:30:00,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:30:00,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:30:00,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:30:00,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:30:00,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:30:00,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:30:00,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:30:00,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:30:00,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:30:00,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:30:00,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:30:00,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:30:00,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:30:00,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:30:00,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:30:00,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:30:00,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:30:00,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:30:00,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:30:00,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:30:00,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:30:00,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:30:00,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:30:00,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:30:00,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:30:00,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:30:00,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:30:00,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:30:00,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:30:00,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:30:00,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:30:00,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:30:00,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:30:00,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:30:00,154 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:30:00,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:30:00,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:30:00,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:30:00,170 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:30:00,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:30:00,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:30:00,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:30:00,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:30:00,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:30:00,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:30:00,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:30:00,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:30:00,173 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:30:00,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:30:00,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:30:00,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:30:00,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:30:00,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:30:00,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:30:00,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:30:00,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:30:00,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:30:00,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:30:00,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:30:00,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:30:00,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:30:00,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:30:00,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:30:00,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:30:00,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:30:00,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:30:00,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:30:00,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:30:00,637 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:30:00,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-10-28 14:30:00,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c9cd857/3424e428920340ed8ce948005b04f4c8/FLAG02e1844f0 [2020-10-28 14:30:01,341 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:30:01,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-10-28 14:30:01,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c9cd857/3424e428920340ed8ce948005b04f4c8/FLAG02e1844f0 [2020-10-28 14:30:01,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c9cd857/3424e428920340ed8ce948005b04f4c8 [2020-10-28 14:30:01,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:30:01,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:30:01,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:30:01,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:30:01,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:30:01,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:30:01" (1/1) ... [2020-10-28 14:30:01,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34cb66bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:01, skipping insertion in model container [2020-10-28 14:30:01,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:30:01" (1/1) ... [2020-10-28 14:30:01,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:30:01,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:30:02,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:30:02,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:30:02,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:30:02,229 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:30:02,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02 WrapperNode [2020-10-28 14:30:02,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:30:02,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:30:02,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:30:02,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:30:02,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (1/1) ... [2020-10-28 14:30:02,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (1/1) ... [2020-10-28 14:30:02,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (1/1) ... [2020-10-28 14:30:02,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (1/1) ... [2020-10-28 14:30:02,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (1/1) ... [2020-10-28 14:30:02,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (1/1) ... [2020-10-28 14:30:02,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (1/1) ... [2020-10-28 14:30:02,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:30:02,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:30:02,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:30:02,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:30:02,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (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 [2020-10-28 14:30:02,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:30:02,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:30:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:30:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:30:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:30:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:30:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:30:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:30:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:30:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:30:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:30:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:30:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:30:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:30:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:30:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:30:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:30:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:30:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:30:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:30:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:30:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:30:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:30:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:30:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:30:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:30:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:30:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:30:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:30:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:30:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:30:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:30:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:30:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:30:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:30:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:30:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:30:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:30:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:30:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:30:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:30:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:30:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:30:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:30:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:30:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:30:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:30:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:30:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:30:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:30:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:30:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:30:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:30:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:30:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:30:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:30:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:30:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:30:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:30:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:30:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:30:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:30:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:30:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:30:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:30:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:30:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:30:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:30:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:30:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:30:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:30:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:30:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:30:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:30:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:30:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:30:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:30:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:30:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:30:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:30:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:30:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:30:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:30:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:30:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:30:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:30:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:30:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:30:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:30:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:30:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:30:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:30:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:30:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:30:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:30:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:30:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:30:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:30:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:30:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:30:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:30:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:30:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:30:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:30:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:30:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:30:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:30:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:30:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:30:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:30:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:30:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:30:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:30:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:30:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:30:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:30:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:30:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:30:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:30:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:30:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:30:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:30:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:30:03,175 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:30:03,176 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-28 14:30:03,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:30:03 BoogieIcfgContainer [2020-10-28 14:30:03,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:30:03,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:30:03,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:30:03,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:30:03,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:30:01" (1/3) ... [2020-10-28 14:30:03,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c376a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:30:03, skipping insertion in model container [2020-10-28 14:30:03,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:02" (2/3) ... [2020-10-28 14:30:03,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c376a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:30:03, skipping insertion in model container [2020-10-28 14:30:03,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:30:03" (3/3) ... [2020-10-28 14:30:03,186 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-10-28 14:30:03,198 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:30:03,203 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:30:03,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:30:03,241 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:30:03,241 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:30:03,242 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:30:03,242 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:30:03,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:30:03,242 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:30:03,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:30:03,242 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:30:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-28 14:30:03,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-28 14:30:03,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:03,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:03,266 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:03,272 INFO L82 PathProgramCache]: Analyzing trace with hash 856451337, now seen corresponding path program 1 times [2020-10-28 14:30:03,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:03,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427119090] [2020-10-28 14:30:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:03,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:03,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:30:03,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:03,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-28 14:30:03,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:03,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:30:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:30:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:30:03,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:30:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:03,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:03,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:03,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:30:03,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:03,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:03,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:03,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427119090] [2020-10-28 14:30:03,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:03,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:30:03,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292114125] [2020-10-28 14:30:03,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:30:03,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:03,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:30:03,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:30:03,989 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-28 14:30:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:04,300 INFO L93 Difference]: Finished difference Result 93 states and 151 transitions. [2020-10-28 14:30:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:30:04,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-28 14:30:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:04,312 INFO L225 Difference]: With dead ends: 93 [2020-10-28 14:30:04,313 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 14:30:04,317 INFO L677 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 [2020-10-28 14:30:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 14:30:04,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-28 14:30:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 14:30:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-28 14:30:04,370 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 12 [2020-10-28 14:30:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:04,371 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-28 14:30:04,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:30:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-28 14:30:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 14:30:04,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:04,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:04,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:30:04,373 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:04,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:04,374 INFO L82 PathProgramCache]: Analyzing trace with hash 734291246, now seen corresponding path program 1 times [2020-10-28 14:30:04,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:04,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962849203] [2020-10-28 14:30:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:04,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:04,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:30:04,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 14:30:04,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:04,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:30:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:30:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:04,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:04,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:04,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:04,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:04,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:30:04,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:04,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:04,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:04,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962849203] [2020-10-28 14:30:04,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:04,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:30:04,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961189932] [2020-10-28 14:30:04,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:30:04,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:04,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:30:04,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:30:04,661 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2020-10-28 14:30:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:04,878 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-28 14:30:04,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:30:04,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 14:30:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:04,880 INFO L225 Difference]: With dead ends: 64 [2020-10-28 14:30:04,880 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:30:04,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:30:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:30:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-28 14:30:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 14:30:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-28 14:30:04,892 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 13 [2020-10-28 14:30:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:04,892 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-28 14:30:04,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:30:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-28 14:30:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 14:30:04,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:04,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:04,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:30:04,894 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:04,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:04,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1364408435, now seen corresponding path program 1 times [2020-10-28 14:30:04,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:04,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458634256] [2020-10-28 14:30:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:05,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:05,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:30:05,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:30:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-28 14:30:05,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:05,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:30:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:30:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:05,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:05,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:05,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:05,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:05,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:05,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:30:05,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:05,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:05,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:05,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458634256] [2020-10-28 14:30:05,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:05,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:30:05,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721771042] [2020-10-28 14:30:05,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:30:05,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:05,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:30:05,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:30:05,662 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-10-28 14:30:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:05,981 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-10-28 14:30:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:30:05,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 14:30:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:05,984 INFO L225 Difference]: With dead ends: 58 [2020-10-28 14:30:05,984 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 14:30:05,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:05,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 14:30:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-10-28 14:30:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 14:30:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-28 14:30:05,994 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 18 [2020-10-28 14:30:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:05,995 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-28 14:30:05,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:30:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-28 14:30:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 14:30:05,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:05,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:05,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:30:05,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1400691951, now seen corresponding path program 1 times [2020-10-28 14:30:05,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:05,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618802279] [2020-10-28 14:30:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:06,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:06,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:30:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 14:30:06,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:06,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:30:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:30:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:30:06,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:06,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:06,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618802279] [2020-10-28 14:30:06,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:06,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:30:06,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714237031] [2020-10-28 14:30:06,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:30:06,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:06,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:30:06,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:30:06,262 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 6 states. [2020-10-28 14:30:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:06,538 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-10-28 14:30:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:30:06,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 14:30:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:06,540 INFO L225 Difference]: With dead ends: 74 [2020-10-28 14:30:06,540 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 14:30:06,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:06,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 14:30:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-28 14:30:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 14:30:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-28 14:30:06,550 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 18 [2020-10-28 14:30:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:06,550 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-28 14:30:06,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:30:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-28 14:30:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:30:06,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:06,551 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] [2020-10-28 14:30:06,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:30:06,552 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:06,553 INFO L82 PathProgramCache]: Analyzing trace with hash -599195063, now seen corresponding path program 1 times [2020-10-28 14:30:06,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:06,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728741944] [2020-10-28 14:30:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:30:06,573 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:30:06,573 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:30:06,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:30:06,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:30:06 BoogieIcfgContainer [2020-10-28 14:30:06,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:30:06,597 INFO L168 Benchmark]: Toolchain (without parser) took 4959.25 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.3 MB in the beginning and 93.1 MB in the end (delta: 31.2 MB). Peak memory consumption was 62.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:06,598 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:30:06,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.66 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 101.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:06,599 INFO L168 Benchmark]: Boogie Preprocessor took 67.52 ms. Allocated memory is still 151.0 MB. Free memory was 101.5 MB in the beginning and 98.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:06,600 INFO L168 Benchmark]: RCFGBuilder took 878.37 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 93.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:06,601 INFO L168 Benchmark]: TraceAbstraction took 3414.82 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 93.1 MB in the beginning and 93.1 MB in the end (delta: 5.9 kB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:06,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 583.66 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 101.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.52 ms. Allocated memory is still 151.0 MB. Free memory was 101.5 MB in the beginning and 98.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 878.37 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 93.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3414.82 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 93.1 MB in the beginning and 93.1 MB in the end (delta: 5.9 kB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data [L1037] COND TRUE !(2 != x->data) [L1037] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "dll-token-2.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 102 SDslu, 229 SDs, 0 SdLazy, 308 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 4874 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...