/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ms2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:06,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:06,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:06,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:45:06,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:45:06,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:45:06,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:45:06,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:45:06,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:45:06,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:45:06,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:45:06,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:45:06,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:06,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:06,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:06,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:06,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:06,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:06,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:06,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:06,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:06,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:06,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:06,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:06,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:06,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:45:06,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:45:06,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:45:06,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:45:06,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:45:06,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:45:06,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:45:06,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:45:06,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:06,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:06,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:06,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:45:06,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:06,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:06,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:06,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:06,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:06,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:06,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:06,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:06,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:06,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:06,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:06,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:06,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:06,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:06,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:06,958 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:06,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:06,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:06,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:06,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:06,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:06,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:06,959 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:07,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:07,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:07,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:07,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:07,452 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:07,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms2f.c [2020-10-23 21:45:07,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5a7dc03/baf1f59a8d054b578cb904db0336610b/FLAG589cc2b36 [2020-10-23 21:45:08,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:08,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms2f.c [2020-10-23 21:45:08,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5a7dc03/baf1f59a8d054b578cb904db0336610b/FLAG589cc2b36 [2020-10-23 21:45:08,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5a7dc03/baf1f59a8d054b578cb904db0336610b [2020-10-23 21:45:08,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:08,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:08,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:08,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:08,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:08,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f63565a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08, skipping insertion in model container [2020-10-23 21:45:08,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:08,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:08,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:08,808 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:08,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:08,848 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:08,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08 WrapperNode [2020-10-23 21:45:08,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:08,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:08,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:08,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:08,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:08,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:08,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:08,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:08,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (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 [2020-10-23 21:45:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:09,336 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:09,337 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 21:45:09,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:09 BoogieIcfgContainer [2020-10-23 21:45:09,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:09,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:09,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:09,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:09,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:08" (1/3) ... [2020-10-23 21:45:09,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f214736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:09, skipping insertion in model container [2020-10-23 21:45:09,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (2/3) ... [2020-10-23 21:45:09,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f214736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:09, skipping insertion in model container [2020-10-23 21:45:09,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:09" (3/3) ... [2020-10-23 21:45:09,350 INFO L111 eAbstractionObserver]: Analyzing ICFG ms2f.c [2020-10-23 21:45:09,384 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:09,396 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:09,429 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:09,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:09,470 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:09,470 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:09,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:09,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:09,470 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:09,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:09,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-23 21:45:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 21:45:09,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:09,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:09,501 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:09,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:09,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1978426860, now seen corresponding path program 1 times [2020-10-23 21:45:09,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:09,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053513200] [2020-10-23 21:45:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:09,656 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:09,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 21:45:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:10,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053513200] [2020-10-23 21:45:10,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:10,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:10,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541465534] [2020-10-23 21:45:10,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:10,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:10,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:10,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:10,079 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-23 21:45:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:10,277 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2020-10-23 21:45:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:10,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-23 21:45:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:10,288 INFO L225 Difference]: With dead ends: 114 [2020-10-23 21:45:10,288 INFO L226 Difference]: Without dead ends: 58 [2020-10-23 21:45:10,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-23 21:45:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-23 21:45:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-23 21:45:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-23 21:45:10,350 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 43 [2020-10-23 21:45:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:10,351 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-23 21:45:10,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-23 21:45:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 21:45:10,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:10,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:10,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:10,354 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:10,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1403761419, now seen corresponding path program 1 times [2020-10-23 21:45:10,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:10,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071726402] [2020-10-23 21:45:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:10,360 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 21:45:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:10,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071726402] [2020-10-23 21:45:10,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:10,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:45:10,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832387748] [2020-10-23 21:45:10,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:45:10,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:10,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:45:10,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:45:10,528 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-10-23 21:45:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:10,776 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2020-10-23 21:45:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:45:10,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-23 21:45:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:10,779 INFO L225 Difference]: With dead ends: 85 [2020-10-23 21:45:10,779 INFO L226 Difference]: Without dead ends: 66 [2020-10-23 21:45:10,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:45:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-23 21:45:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2020-10-23 21:45:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-23 21:45:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-23 21:45:10,796 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 43 [2020-10-23 21:45:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:10,797 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-23 21:45:10,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:45:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-23 21:45:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-23 21:45:10,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:10,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:10,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:10,800 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1589882434, now seen corresponding path program 1 times [2020-10-23 21:45:10,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:10,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528461481] [2020-10-23 21:45:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:10,959 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:45:10,961 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:11,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:11,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:11,120 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:45:11,120 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:11,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:45:11,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:11 BoogieIcfgContainer [2020-10-23 21:45:11,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:11,143 INFO L168 Benchmark]: Toolchain (without parser) took 2573.78 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 137.0 MB in the beginning and 157.4 MB in the end (delta: -20.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,144 INFO L168 Benchmark]: CDTParser took 1.05 ms. Allocated memory is still 160.4 MB. Free memory is still 134.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:11,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.51 ms. Allocated memory is still 160.4 MB. Free memory was 136.4 MB in the beginning and 126.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,146 INFO L168 Benchmark]: Boogie Preprocessor took 45.03 ms. Allocated memory is still 160.4 MB. Free memory was 126.5 MB in the beginning and 125.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,147 INFO L168 Benchmark]: RCFGBuilder took 442.96 ms. Allocated memory is still 160.4 MB. Free memory was 124.8 MB in the beginning and 105.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,148 INFO L168 Benchmark]: TraceAbstraction took 1798.41 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 105.4 MB in the beginning and 157.4 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:11,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05 ms. Allocated memory is still 160.4 MB. Free memory is still 134.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.51 ms. Allocated memory is still 160.4 MB. Free memory was 136.4 MB in the beginning and 126.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.03 ms. Allocated memory is still 160.4 MB. Free memory was 126.5 MB in the beginning and 125.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 442.96 ms. Allocated memory is still 160.4 MB. Free memory was 124.8 MB in the beginning and 105.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1798.41 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 105.4 MB in the beginning and 157.4 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i N) [L15] COND TRUE !(cond) [L15] CALL reach_error() [L10] __assert_fail("0", "ms2f.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 62 SDslu, 37 SDs, 0 SdLazy, 135 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...