/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test30-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:24:17,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:24:17,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:24:17,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:24:17,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:24:17,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:24:17,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:24:17,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:24:17,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:24:17,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:24:17,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:24:17,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:24:17,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:24:17,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:24:17,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:24:17,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:24:17,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:24:17,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:24:17,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:24:17,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:24:17,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:24:17,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:24:17,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:24:17,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:24:17,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:24:17,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:24:17,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:24:17,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:24:17,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:24:17,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:24:17,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:24:17,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:24:17,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:24:17,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:24:17,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:24:17,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:24:17,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:24:17,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:24:17,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:24:17,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:24:17,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:24:17,988 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 [2020-08-19 04:24:18,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:24:18,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:24:18,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:24:18,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:24:18,053 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:24:18,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:24:18,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:24:18,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:24:18,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:24:18,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:24:18,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:24:18,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:24:18,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:24:18,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:24:18,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:24:18,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:24:18,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:24:18,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:24:18,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:24:18,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:24:18,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:24:18,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:24:18,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:24:18,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:24:18,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:24:18,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:24:18,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:24:18,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:24:18,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:24:18,059 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:24:18,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:24:18,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:24:18,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:24:18,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:24:18,459 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:24:18,460 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test30-2.c [2020-08-19 04:24:18,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c730d1e00/67b3ae454bc6469dbeeaa6777f66cb71/FLAGfba425433 [2020-08-19 04:24:19,027 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:24:19,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test30-2.c [2020-08-19 04:24:19,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c730d1e00/67b3ae454bc6469dbeeaa6777f66cb71/FLAGfba425433 [2020-08-19 04:24:19,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c730d1e00/67b3ae454bc6469dbeeaa6777f66cb71 [2020-08-19 04:24:19,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:24:19,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:24:19,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:24:19,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:24:19,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:24:19,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19, skipping insertion in model container [2020-08-19 04:24:19,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:24:19,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:24:19,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:24:19,630 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:24:19,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:24:19,663 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:24:19,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19 WrapperNode [2020-08-19 04:24:19,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:24:19,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:24:19,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:24:19,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:24:19,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (1/1) ... [2020-08-19 04:24:19,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:24:19,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:24:19,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:24:19,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:24:19,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (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 [2020-08-19 04:24:19,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:24:19,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:24:19,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-08-19 04:24:19,847 INFO L138 BoogieDeclarations]: Found implementation of procedure assign2 [2020-08-19 04:24:19,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:24:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:24:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-08-19 04:24:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:24:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:24:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure assign2 [2020-08-19 04:24:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:24:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:24:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:24:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:24:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:24:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 04:24:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:24:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:24:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:24:20,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:24:20,145 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 04:24:20,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:24:20 BoogieIcfgContainer [2020-08-19 04:24:20,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:24:20,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:24:20,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:24:20,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:24:20,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:24:19" (1/3) ... [2020-08-19 04:24:20,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed79081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:24:20, skipping insertion in model container [2020-08-19 04:24:20,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:19" (2/3) ... [2020-08-19 04:24:20,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed79081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:24:20, skipping insertion in model container [2020-08-19 04:24:20,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:24:20" (3/3) ... [2020-08-19 04:24:20,173 INFO L109 eAbstractionObserver]: Analyzing ICFG test30-2.c [2020-08-19 04:24:20,200 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:24:20,217 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:24:20,246 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:24:20,267 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:24:20,267 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:24:20,268 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:24:20,268 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:24:20,268 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:24:20,268 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:24:20,268 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:24:20,269 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:24:20,288 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-19 04:24:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 04:24:20,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:20,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:20,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:24:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash -457594768, now seen corresponding path program 1 times [2020-08-19 04:24:20,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:20,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943484837] [2020-08-19 04:24:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:24:20,476 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:24:20,477 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:24:20,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:24:20,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:24:20 BoogieIcfgContainer [2020-08-19 04:24:20,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:24:20,506 INFO L168 Benchmark]: Toolchain (without parser) took 1093.28 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 104.6 MB in the beginning and 150.6 MB in the end (delta: -46.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,508 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:24:20,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.73 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 93.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,510 INFO L168 Benchmark]: Boogie Preprocessor took 119.30 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 93.8 MB in the beginning and 181.0 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,511 INFO L168 Benchmark]: RCFGBuilder took 372.73 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 164.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,512 INFO L168 Benchmark]: TraceAbstraction took 344.68 ms. Allocated memory is still 202.9 MB. Free memory was 164.1 MB in the beginning and 150.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:20,516 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.73 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 93.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.30 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 93.8 MB in the beginning and 181.0 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.73 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 164.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 344.68 ms. Allocated memory is still 202.9 MB. Free memory was 164.1 MB in the beginning and 150.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 31]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L3] int a = 1, b; [L5-L7] struct dummy { int *a, *b; } global = {&a, &b}; [L21] struct dummy *pd = &global; [L23] CALL assign2(&pd->a, &pd->b) [L16] EXPR \read(**pb) [L16] EXPR \read(**pb) [L16] CALL assign(*pb, *pb) [L11] EXPR \read(*pb) [L11] *pa = *pb [L16] RET assign(*pb, *pb) [L23] RET assign2(&pd->a, &pd->b) [L25] EXPR \read(a) [L25] EXPR \read(b) [L25] COND TRUE a != b [L31] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...