/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test30-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:09:48,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:09:48,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:09:48,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:09:48,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:09:48,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:09:48,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:09:48,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:09:48,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:09:48,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:09:48,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:09:48,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:09:48,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:09:48,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:09:48,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:09:48,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:09:48,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:09:48,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:09:48,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:09:48,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:09:48,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:09:48,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:09:48,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:09:48,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:09:48,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:09:48,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:09:48,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:09:48,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:09:48,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:09:48,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:09:48,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:09:48,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:09:48,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:09:48,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:09:48,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:09:48,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:09:48,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:09:48,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:09:48,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:09:48,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:09:48,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:09:48,554 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 [2020-08-21 18:09:48,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:09:48,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:09:48,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:09:48,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:09:48,578 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:09:48,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:09:48,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:09:48,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:09:48,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:09:48,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:09:48,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:09:48,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:09:48,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:09:48,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:09:48,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:09:48,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:09:48,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:09:48,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:09:48,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:09:48,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:09:48,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:09:48,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:09:48,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:09:48,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:09:48,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:09:48,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:09:48,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:09:48,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:09:48,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:09:48,582 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=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:09:48,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:09:48,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:09:48,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:09:48,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:09:48,904 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:09:48,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test30-2.c [2020-08-21 18:09:48,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f594d4e7a/d975d588465246ae81f91a5c4f5eed94/FLAG858e0e2e9 [2020-08-21 18:09:49,379 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:09:49,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test30-2.c [2020-08-21 18:09:49,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f594d4e7a/d975d588465246ae81f91a5c4f5eed94/FLAG858e0e2e9 [2020-08-21 18:09:49,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f594d4e7a/d975d588465246ae81f91a5c4f5eed94 [2020-08-21 18:09:49,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:09:49,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:09:49,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:09:49,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:09:49,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:09:49,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:09:49" (1/1) ... [2020-08-21 18:09:49,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e8bb43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:49, skipping insertion in model container [2020-08-21 18:09:49,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:09:49" (1/1) ... [2020-08-21 18:09:49,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:09:49,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:09:50,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:09:50,097 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:09:50,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:09:50,140 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:09:50,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50 WrapperNode [2020-08-21 18:09:50,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:09:50,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:09:50,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:09:50,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:09:50,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (1/1) ... [2020-08-21 18:09:50,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (1/1) ... [2020-08-21 18:09:50,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (1/1) ... [2020-08-21 18:09:50,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (1/1) ... [2020-08-21 18:09:50,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (1/1) ... [2020-08-21 18:09:50,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (1/1) ... [2020-08-21 18:09:50,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (1/1) ... [2020-08-21 18:09:50,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:09:50,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:09:50,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:09:50,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:09:50,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (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 [2020-08-21 18:09:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:09:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:09:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-08-21 18:09:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assign2 [2020-08-21 18:09:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:09:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:09:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-08-21 18:09:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:09:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:09:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure assign2 [2020-08-21 18:09:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:09:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:09:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:09:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:09:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:09:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 18:09:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:09:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:09:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:09:50,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:09:50,822 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 18:09:50,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:09:50 BoogieIcfgContainer [2020-08-21 18:09:50,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:09:50,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:09:50,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:09:50,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:09:50,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:09:49" (1/3) ... [2020-08-21 18:09:50,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f136a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:09:50, skipping insertion in model container [2020-08-21 18:09:50,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:50" (2/3) ... [2020-08-21 18:09:50,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f136a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:09:50, skipping insertion in model container [2020-08-21 18:09:50,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:09:50" (3/3) ... [2020-08-21 18:09:50,835 INFO L109 eAbstractionObserver]: Analyzing ICFG test30-2.c [2020-08-21 18:09:50,846 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:09:50,853 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:09:50,869 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:09:50,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:09:50,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:09:50,905 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:09:50,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:09:50,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:09:50,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:09:50,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:09:50,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:09:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-21 18:09:50,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 18:09:50,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:50,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:50,935 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:50,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:50,941 INFO L82 PathProgramCache]: Analyzing trace with hash -457594768, now seen corresponding path program 1 times [2020-08-21 18:09:50,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:50,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767416174] [2020-08-21 18:09:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:09:51,112 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:09:51,113 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:09:51,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:09:51,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:09:51 BoogieIcfgContainer [2020-08-21 18:09:51,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:09:51,140 INFO L168 Benchmark]: Toolchain (without parser) took 1308.03 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.0 MB in the beginning and 151.1 MB in the end (delta: -48.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:51,141 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:09:51,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.85 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:51,143 INFO L168 Benchmark]: Boogie Preprocessor took 168.43 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 181.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:51,144 INFO L168 Benchmark]: RCFGBuilder took 514.67 ms. Allocated memory is still 203.9 MB. Free memory was 181.1 MB in the beginning and 165.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:51,145 INFO L168 Benchmark]: TraceAbstraction took 309.17 ms. Allocated memory is still 203.9 MB. Free memory was 164.7 MB in the beginning and 151.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:51,149 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.85 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.43 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 181.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 514.67 ms. Allocated memory is still 203.9 MB. Free memory was 181.1 MB in the beginning and 165.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 309.17 ms. Allocated memory is still 203.9 MB. Free memory was 164.7 MB in the beginning and 151.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 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...