/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/s52iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:30,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:30,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:30,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:47:30,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:47:30,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:47:30,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:47:30,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:47:30,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:47:30,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:47:30,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:47:30,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:47:30,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:30,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:30,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:30,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:30,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:30,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:30,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:30,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:30,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:30,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:30,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:30,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:30,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:47:30,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:47:30,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:47:30,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:47:30,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:47:30,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:47:30,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:47:30,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:47:30,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:47:30,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:47:30,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:47:30,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:47:30,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:47:30,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:47:30,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:30,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:30,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:30,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:47:30,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:30,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:30,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:30,734 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:30,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:30,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:30,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:30,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:30,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:30,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:30,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:30,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:30,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:30,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:30,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:30,737 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:30,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:30,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:30,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:30,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:30,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:30,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:30,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:31,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:31,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:31,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:31,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:31,206 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:31,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s52iff.c [2021-02-23 18:47:31,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96ee142d/18688e3a186a42cfb4231a2729bec62a/FLAG5f5a36177 [2021-02-23 18:47:31,912 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:31,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s52iff.c [2021-02-23 18:47:31,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96ee142d/18688e3a186a42cfb4231a2729bec62a/FLAG5f5a36177 [2021-02-23 18:47:32,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96ee142d/18688e3a186a42cfb4231a2729bec62a [2021-02-23 18:47:32,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:32,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:32,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:32,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:32,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:32,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53725f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32, skipping insertion in model container [2021-02-23 18:47:32,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:32,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:32,486 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/s52iff.c[589,602] [2021-02-23 18:47:32,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:32,519 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:32,535 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/s52iff.c[589,602] [2021-02-23 18:47:32,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:32,565 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:32,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32 WrapperNode [2021-02-23 18:47:32,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:32,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:32,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:32,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:32,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (1/1) ... [2021-02-23 18:47:32,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:32,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:32,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:32,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:32,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (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 [2021-02-23 18:47:32,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:32,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:32,733 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:32,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:32,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:32,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:33,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:33,328 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:47:33,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:33 BoogieIcfgContainer [2021-02-23 18:47:33,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:33,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:33,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:33,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:33,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:32" (1/3) ... [2021-02-23 18:47:33,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cac4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:33, skipping insertion in model container [2021-02-23 18:47:33,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:32" (2/3) ... [2021-02-23 18:47:33,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cac4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:33, skipping insertion in model container [2021-02-23 18:47:33,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:33" (3/3) ... [2021-02-23 18:47:33,340 INFO L111 eAbstractionObserver]: Analyzing ICFG s52iff.c [2021-02-23 18:47:33,347 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:33,352 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:33,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:33,398 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:33,398 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:33,398 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:33,399 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:33,399 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:33,399 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:33,399 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:33,399 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-23 18:47:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:47:33,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:33,429 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] [2021-02-23 18:47:33,429 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:33,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1439408661, now seen corresponding path program 1 times [2021-02-23 18:47:33,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:33,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889763911] [2021-02-23 18:47:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:33,534 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:33,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:33,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:33,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:33,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:33,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:33,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:33,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:33,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:33,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:33,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889763911] [2021-02-23 18:47:33,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:33,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:33,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942354349] [2021-02-23 18:47:33,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:33,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:33,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:33,870 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2021-02-23 18:47:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:34,365 INFO L93 Difference]: Finished difference Result 149 states and 168 transitions. [2021-02-23 18:47:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:34,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-23 18:47:34,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:34,382 INFO L225 Difference]: With dead ends: 149 [2021-02-23 18:47:34,382 INFO L226 Difference]: Without dead ends: 73 [2021-02-23 18:47:34,392 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 [2021-02-23 18:47:34,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-23 18:47:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-23 18:47:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 18:47:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-23 18:47:34,476 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 38 [2021-02-23 18:47:34,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:34,477 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-23 18:47:34,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-23 18:47:34,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:47:34,481 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:34,482 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] [2021-02-23 18:47:34,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:34,483 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:34,484 INFO L82 PathProgramCache]: Analyzing trace with hash -415145042, now seen corresponding path program 1 times [2021-02-23 18:47:34,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:34,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629930536] [2021-02-23 18:47:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:34,501 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:34,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:34,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:34,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:34,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:34,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:34,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:34,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:34,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:34,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629930536] [2021-02-23 18:47:34,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:34,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:34,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766506817] [2021-02-23 18:47:34,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:34,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:34,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:34,674 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2021-02-23 18:47:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:34,908 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2021-02-23 18:47:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:34,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-23 18:47:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:34,911 INFO L225 Difference]: With dead ends: 147 [2021-02-23 18:47:34,911 INFO L226 Difference]: Without dead ends: 107 [2021-02-23 18:47:34,913 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 [2021-02-23 18:47:34,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-23 18:47:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2021-02-23 18:47:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 18:47:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-23 18:47:34,931 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 38 [2021-02-23 18:47:34,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:34,932 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-23 18:47:34,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:34,932 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-23 18:47:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-23 18:47:34,935 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:34,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:34,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:34,935 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:34,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1781170039, now seen corresponding path program 1 times [2021-02-23 18:47:34,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:34,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455163174] [2021-02-23 18:47:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:34,965 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:34,966 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:35,020 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:35,060 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:35,104 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:35,104 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:35,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:35,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:35 BoogieIcfgContainer [2021-02-23 18:47:35,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:35,136 INFO L168 Benchmark]: Toolchain (without parser) took 2851.28 ms. Allocated memory was 159.4 MB in the beginning and 206.6 MB in the end (delta: 47.2 MB). Free memory was 135.2 MB in the beginning and 131.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 51.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,139 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:35,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.83 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 123.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,143 INFO L168 Benchmark]: Boogie Preprocessor took 47.81 ms. Allocated memory is still 159.4 MB. Free memory was 123.9 MB in the beginning and 122.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,146 INFO L168 Benchmark]: RCFGBuilder took 714.38 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 134.3 MB in the end (delta: -12.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,151 INFO L168 Benchmark]: TraceAbstraction took 1802.08 ms. Allocated memory was 159.4 MB in the beginning and 206.6 MB in the end (delta: 47.2 MB). Free memory was 133.7 MB in the beginning and 131.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 49.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.83 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 123.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.81 ms. Allocated memory is still 159.4 MB. Free memory was 123.9 MB in the beginning and 122.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 714.38 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 134.3 MB in the end (delta: -12.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1802.08 ms. Allocated memory was 159.4 MB in the beginning and 206.6 MB in the end (delta: 47.2 MB). Free memory was 133.7 MB in the beginning and 131.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 49.1 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] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i