/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:35,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:35,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:35,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:35,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:35,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:35,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:35,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:35,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:35,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:35,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:35,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:35,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:35,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:35,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:35,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:35,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:35,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:35,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:35,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:35,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:35,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:35,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:35,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:35,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 21:16:35,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 21:16:35,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 21:16:35,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 21:16:35,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 21:16:35,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 21:16:35,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 21:16:35,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 21:16:35,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 21:16:35,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 21:16:35,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 21:16:35,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 21:16:35,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 21:16:35,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 21:16:35,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:35,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:35,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:35,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:16:35,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:35,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:35,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:35,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:35,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:35,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:35,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:35,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:35,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:35,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:35,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:35,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:35,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:35,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:35,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:35,839 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:35,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:35,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:35,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:35,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:35,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:35,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:35,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:36,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:36,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:36,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:36,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:36,248 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:36,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-21 21:16:36,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07a32846/55a98de48f964837a70f9b174cf0ecb1/FLAG206e746d2 [2021-02-21 21:16:36,956 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:36,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-21 21:16:36,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07a32846/55a98de48f964837a70f9b174cf0ecb1/FLAG206e746d2 [2021-02-21 21:16:37,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07a32846/55a98de48f964837a70f9b174cf0ecb1 [2021-02-21 21:16:37,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:37,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:37,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:37,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:37,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:37,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c202488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37, skipping insertion in model container [2021-02-21 21:16:37,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:37,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:37,550 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c[587,600] [2021-02-21 21:16:37,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:37,580 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:37,602 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c[587,600] [2021-02-21 21:16:37,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:37,653 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:37,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37 WrapperNode [2021-02-21 21:16:37,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:37,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:37,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:37,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:37,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (1/1) ... [2021-02-21 21:16:37,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:37,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:37,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:37,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:37,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (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 [2021-02-21 21:16:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:37,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:37,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:38,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:38,509 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:16:38,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:38 BoogieIcfgContainer [2021-02-21 21:16:38,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:38,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:38,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:38,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:38,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:37" (1/3) ... [2021-02-21 21:16:38,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a1d24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:38, skipping insertion in model container [2021-02-21 21:16:38,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:37" (2/3) ... [2021-02-21 21:16:38,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a1d24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:38, skipping insertion in model container [2021-02-21 21:16:38,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:38" (3/3) ... [2021-02-21 21:16:38,520 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2021-02-21 21:16:38,526 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:38,531 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:38,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:38,572 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:38,572 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:38,572 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:38,572 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:38,573 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:38,573 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:38,573 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:38,573 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2021-02-21 21:16:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 21:16:38,599 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:38,600 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] [2021-02-21 21:16:38,600 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:38,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1183518233, now seen corresponding path program 1 times [2021-02-21 21:16:38,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:38,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964314821] [2021-02-21 21:16:38,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:38,694 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:38,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:38,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:38,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:16:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:39,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:39,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:39,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964314821] [2021-02-21 21:16:39,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:39,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:39,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773065620] [2021-02-21 21:16:39,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:39,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:39,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:39,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:39,042 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2021-02-21 21:16:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:39,291 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2021-02-21 21:16:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:39,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-21 21:16:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:39,302 INFO L225 Difference]: With dead ends: 110 [2021-02-21 21:16:39,303 INFO L226 Difference]: Without dead ends: 57 [2021-02-21 21:16:39,306 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 [2021-02-21 21:16:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-21 21:16:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-21 21:16:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-21 21:16:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-21 21:16:39,374 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 42 [2021-02-21 21:16:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:39,374 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-21 21:16:39,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-21 21:16:39,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 21:16:39,376 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:39,377 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] [2021-02-21 21:16:39,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:39,377 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:39,378 INFO L82 PathProgramCache]: Analyzing trace with hash -232895933, now seen corresponding path program 1 times [2021-02-21 21:16:39,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:39,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481670839] [2021-02-21 21:16:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:39,382 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:39,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:39,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:39,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:39,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:39,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:39,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:39,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:39,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:39,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:39,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:39,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:16:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:39,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:39,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:39,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481670839] [2021-02-21 21:16:39,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:39,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:39,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517310138] [2021-02-21 21:16:39,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:39,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:39,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:39,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:39,674 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-21 21:16:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:40,021 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2021-02-21 21:16:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:40,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-21 21:16:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:40,026 INFO L225 Difference]: With dead ends: 83 [2021-02-21 21:16:40,026 INFO L226 Difference]: Without dead ends: 65 [2021-02-21 21:16:40,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:16:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-21 21:16:40,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-02-21 21:16:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-21 21:16:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-21 21:16:40,069 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 42 [2021-02-21 21:16:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:40,073 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-21 21:16:40,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-21 21:16:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 21:16:40,077 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:40,078 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] [2021-02-21 21:16:40,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:40,078 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:40,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1631302411, now seen corresponding path program 1 times [2021-02-21 21:16:40,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:40,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440944660] [2021-02-21 21:16:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:40,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:16:43,629 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 27 [2021-02-21 21:16:43,632 WARN L141 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-02-21 21:16:43,640 WARN L147 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size 32 [2021-02-21 21:16:43,641 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:43,643 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:43,677 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:43,714 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:43,753 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:16:43,754 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:43,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:43,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:43 BoogieIcfgContainer [2021-02-21 21:16:43,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:43,777 INFO L168 Benchmark]: Toolchain (without parser) took 6427.28 ms. Allocated memory is still 151.0 MB. Free memory was 128.1 MB in the beginning and 68.8 MB in the end (delta: 59.3 MB). Peak memory consumption was 60.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:43,778 INFO L168 Benchmark]: CDTParser took 1.04 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:43,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.24 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:43,780 INFO L168 Benchmark]: Boogie Preprocessor took 85.46 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:43,782 INFO L168 Benchmark]: RCFGBuilder took 768.47 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 127.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:43,786 INFO L168 Benchmark]: TraceAbstraction took 5261.85 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 68.8 MB in the end (delta: 57.8 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:43,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.24 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.46 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 768.47 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 127.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5261.85 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 68.8 MB in the end (delta: 57.8 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_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