/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 15:23:40,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 15:23:40,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 15:23:40,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 15:23:40,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 15:23:40,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 15:23:40,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 15:23:40,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 15:23:40,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 15:23:40,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 15:23:40,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 15:23:40,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 15:23:40,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 15:23:40,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 15:23:40,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 15:23:40,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 15:23:40,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 15:23:40,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 15:23:40,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 15:23:40,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 15:23:40,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 15:23:40,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 15:23:40,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 15:23:40,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 15:23:40,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 15:23:40,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 15:23:40,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 15:23:40,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 15:23:40,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 15:23:40,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 15:23:40,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 15:23:40,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 15:23:40,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 15:23:40,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 15:23:40,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 15:23:40,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 15:23:40,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 15:23:40,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 15:23:40,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 15:23:40,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 15:23:40,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 15:23:40,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 15:23:40,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 15:23:40,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 15:23:40,784 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 15:23:40,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 15:23:40,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 15:23:40,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:23:40,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 15:23:40,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 15:23:40,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 15:23:40,786 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation [2020-07-07 15:23:41,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 15:23:41,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 15:23:41,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 15:23:41,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 15:23:41,070 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 15:23:41,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-2.c [2020-07-07 15:23:41,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6114958e/4774b635d042476bb59d51dc79336e8c/FLAG4aa9a3bd5 [2020-07-07 15:23:41,595 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 15:23:41,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-2.c [2020-07-07 15:23:41,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6114958e/4774b635d042476bb59d51dc79336e8c/FLAG4aa9a3bd5 [2020-07-07 15:23:41,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6114958e/4774b635d042476bb59d51dc79336e8c [2020-07-07 15:23:41,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 15:23:41,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 15:23:41,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 15:23:41,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 15:23:41,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 15:23:42,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:23:41" (1/1) ... [2020-07-07 15:23:42,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7963ab65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42, skipping insertion in model container [2020-07-07 15:23:42,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:23:41" (1/1) ... [2020-07-07 15:23:42,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 15:23:42,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 15:23:42,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:23:42,217 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 15:23:42,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:23:42,254 INFO L208 MainTranslator]: Completed translation [2020-07-07 15:23:42,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42 WrapperNode [2020-07-07 15:23:42,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 15:23:42,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 15:23:42,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 15:23:42,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 15:23:42,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (1/1) ... [2020-07-07 15:23:42,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (1/1) ... [2020-07-07 15:23:42,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (1/1) ... [2020-07-07 15:23:42,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (1/1) ... [2020-07-07 15:23:42,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (1/1) ... [2020-07-07 15:23:42,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (1/1) ... [2020-07-07 15:23:42,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (1/1) ... [2020-07-07 15:23:42,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 15:23:42,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 15:23:42,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 15:23:42,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 15:23:42,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-07 15:23:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 15:23:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 15:23:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-07 15:23:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-07 15:23:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-07 15:23:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 15:23:42,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 15:23:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 15:23:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-07 15:23:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-07 15:23:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 15:23:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-07 15:23:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-07 15:23:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 15:23:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 15:23:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 15:23:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 15:23:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 15:23:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 15:23:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 15:23:42,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 15:23:42,800 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 15:23:42,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:23:42 BoogieIcfgContainer [2020-07-07 15:23:42,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 15:23:42,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 15:23:42,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 15:23:42,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 15:23:42,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 03:23:41" (1/3) ... [2020-07-07 15:23:42,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376a05d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:23:42, skipping insertion in model container [2020-07-07 15:23:42,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:42" (2/3) ... [2020-07-07 15:23:42,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376a05d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:23:42, skipping insertion in model container [2020-07-07 15:23:42,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:23:42" (3/3) ... [2020-07-07 15:23:42,813 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-2.c [2020-07-07 15:23:42,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 15:23:42,831 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 15:23:42,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 15:23:42,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 15:23:42,866 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 15:23:42,866 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-07 15:23:42,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 15:23:42,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 15:23:42,867 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 15:23:42,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 15:23:42,867 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 15:23:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-07-07 15:23:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-07 15:23:42,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:23:42,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:23:42,900 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:23:42,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:23:42,905 INFO L82 PathProgramCache]: Analyzing trace with hash -487286935, now seen corresponding path program 1 times [2020-07-07 15:23:42,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:23:42,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374341029] [2020-07-07 15:23:42,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:23:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:23:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:23:43,048 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 15:23:43,049 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 15:23:43,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 03:23:43 BoogieIcfgContainer [2020-07-07 15:23:43,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 15:23:43,109 INFO L168 Benchmark]: Toolchain (without parser) took 1115.54 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 138.5 MB in the end (delta: -35.7 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:43,111 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 144.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 15:23:43,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.75 ms. Allocated memory is still 144.2 MB. Free memory was 102.6 MB in the beginning and 92.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:43,114 INFO L168 Benchmark]: Boogie Preprocessor took 136.88 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.3 MB in the beginning and 179.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:43,115 INFO L168 Benchmark]: RCFGBuilder took 412.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 159.7 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:43,116 INFO L168 Benchmark]: TraceAbstraction took 299.90 ms. Allocated memory is still 201.3 MB. Free memory was 159.1 MB in the beginning and 138.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:43,121 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 144.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.75 ms. Allocated memory is still 144.2 MB. Free memory was 102.6 MB in the beginning and 92.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.88 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.3 MB in the beginning and 179.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 159.7 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 299.90 ms. Allocated memory is still 201.3 MB. Free memory was 159.1 MB in the beginning and 138.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [\old(d1)=9, \old(d1)=6, \old(d2)=11, \old(d2)=10, d1={3:0}, d2={2:0}] [L32] CALL init() VAL [d1={3:0}, d2={2:0}] [L13] d1.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2147455548, d1={3:0}, d2={2:0}] [L14] d1.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=15922, d1={3:0}, d2={2:0}] [L16] d2.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2147482506, d1={3:0}, d2={2:0}] [L17] d2.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=15923, d1={3:0}, d2={2:0}] [L32] RET init() VAL [d1={3:0}, d2={2:0}] [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=257, __VERIFIER_nondet_bool() ? &d1 : &d2={3:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); VAL [\result={3:0}, __VERIFIER_nondet_bool()=257, __VERIFIER_nondet_bool() ? &d1 : &d2={3:0}, d1={3:0}, d2={2:0}] [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={3:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); VAL [d1={3:0}, d2={2:0}, get_dummy()={3:0}, pd1={3:0}] [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=257, __VERIFIER_nondet_bool() ? &d1 : &d2={3:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); VAL [\result={3:0}, __VERIFIER_nondet_bool()=257, __VERIFIER_nondet_bool() ? &d1 : &d2={3:0}, d1={3:0}, d2={2:0}] [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={3:0}, pd1={3:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); VAL [d1={3:0}, d2={2:0}, get_dummy()={3:0}, pd1={3:0}, pd2={3:0}] [L34] COND TRUE pd1 != 0 && pd1 == pd2 VAL [d1={3:0}, d2={2:0}, pd1={3:0}, pd2={3:0}] [L35] CALL, EXPR check(pd1, pd2) VAL [d1={3:0}, d2={2:0}, s1={3:0}, s2={3:0}] [L27] EXPR s1->a VAL [d1={3:0}, d2={2:0}, s1={3:0}, s1={3:0}, s1->a=-2147455548, s2={3:0}, s2={3:0}] [L27] EXPR s2->b VAL [d1={3:0}, d2={2:0}, s1={3:0}, s1={3:0}, s1->a=-2147455548, s2={3:0}, s2={3:0}, s2->b=15922] [L27] return s1->a == s2->b; VAL [\result=0, d1={3:0}, d2={2:0}, s1={3:0}, s1={3:0}, s1->a=-2147455548, s2={3:0}, s2={3:0}, s2->b=15922] [L35] RET, EXPR check(pd1, pd2) VAL [check(pd1, pd2)=0, d1={3:0}, d2={2:0}, pd1={3:0}, pd2={3:0}] [L35] COND TRUE !check(pd1, pd2) VAL [check(pd1, pd2)=0, d1={3:0}, d2={2:0}, pd1={3:0}, pd2={3:0}] [L42] __VERIFIER_error() VAL [d1={3:0}, d2={2:0}, pd1={3:0}, pd2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 2, 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=65occurred 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, 63 NumberOfCodeBlocks, 63 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...