/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:20,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:20,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:20,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:16:20,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:16:20,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:16:20,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:16:20,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:16:20,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:16:20,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:16:20,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:16:20,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:16:20,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:20,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:20,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:20,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:20,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:20,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:20,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:20,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:20,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:20,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:20,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:20,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:20,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 00:16:20,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 00:16:20,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 00:16:20,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 00:16:20,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 00:16:20,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 00:16:20,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 00:16:20,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 00:16:20,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 00:16:20,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 00:16:20,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 00:16:20,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 00:16:20,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 00:16:20,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 00:16:20,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:16:20,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:16:20,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:16:20,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:20,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:20,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:20,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:20,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:20,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:20,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:20,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:20,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:20,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:20,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:20,310 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:20,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:20,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:20,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:20,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:20,312 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:20,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:20,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:20,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:20,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:20,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:20,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:20,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:20,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:20,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:20,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:20,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:20,757 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:20,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2021-02-24 00:16:20,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aea2f9a1/9e100dfb5aaa42b396913fdaf245bbbf/FLAG0906cccdd [2021-02-24 00:16:21,416 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:21,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina1f.c [2021-02-24 00:16:21,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aea2f9a1/9e100dfb5aaa42b396913fdaf245bbbf/FLAG0906cccdd [2021-02-24 00:16:21,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aea2f9a1/9e100dfb5aaa42b396913fdaf245bbbf [2021-02-24 00:16:21,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:21,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:21,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:21,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:21,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:21,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:21" (1/1) ... [2021-02-24 00:16:21,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7358e60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:21, skipping insertion in model container [2021-02-24 00:16:21,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:21" (1/1) ... [2021-02-24 00:16:21,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:21,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:22,022 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/sina1f.c[589,602] [2021-02-24 00:16:22,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:22,052 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:22,067 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/sina1f.c[589,602] [2021-02-24 00:16:22,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:22,094 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:22,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22 WrapperNode [2021-02-24 00:16:22,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:22,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:22,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:22,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:22,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (1/1) ... [2021-02-24 00:16:22,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (1/1) ... [2021-02-24 00:16:22,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (1/1) ... [2021-02-24 00:16:22,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (1/1) ... [2021-02-24 00:16:22,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (1/1) ... [2021-02-24 00:16:22,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (1/1) ... [2021-02-24 00:16:22,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (1/1) ... [2021-02-24 00:16:22,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:22,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:22,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:22,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:22,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (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 [2021-02-24 00:16:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:16:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:16:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:16:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:16:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:22,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:22,877 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 00:16:22,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:22 BoogieIcfgContainer [2021-02-24 00:16:22,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:22,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:22,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:22,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:21" (1/3) ... [2021-02-24 00:16:22,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f3c59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:22, skipping insertion in model container [2021-02-24 00:16:22,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:22" (2/3) ... [2021-02-24 00:16:22,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f3c59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:22, skipping insertion in model container [2021-02-24 00:16:22,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:22" (3/3) ... [2021-02-24 00:16:22,899 INFO L111 eAbstractionObserver]: Analyzing ICFG sina1f.c [2021-02-24 00:16:22,907 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:22,912 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:22,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:22,975 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:22,975 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:22,975 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:22,976 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:22,976 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:22,976 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:22,976 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:22,976 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2021-02-24 00:16:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:16:23,022 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:23,023 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] [2021-02-24 00:16:23,023 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:23,034 INFO L82 PathProgramCache]: Analyzing trace with hash -774145788, now seen corresponding path program 1 times [2021-02-24 00:16:23,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:23,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741641170] [2021-02-24 00:16:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:23,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:23,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:23,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:23,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:23,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:23,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:23,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:23,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:23,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741641170] [2021-02-24 00:16:23,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:23,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:23,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201842404] [2021-02-24 00:16:23,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:23,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:23,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:23,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:23,557 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2021-02-24 00:16:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:23,911 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2021-02-24 00:16:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:23,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 00:16:23,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:23,922 INFO L225 Difference]: With dead ends: 111 [2021-02-24 00:16:23,922 INFO L226 Difference]: Without dead ends: 57 [2021-02-24 00:16:23,927 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 [2021-02-24 00:16:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-24 00:16:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-24 00:16:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-24 00:16:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-24 00:16:23,981 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 38 [2021-02-24 00:16:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:23,982 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-24 00:16:23,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-24 00:16:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:16:23,984 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:23,984 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] [2021-02-24 00:16:23,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:23,985 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:23,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:23,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1387502767, now seen corresponding path program 1 times [2021-02-24 00:16:23,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:23,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113003181] [2021-02-24 00:16:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:24,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:24,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:24,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:24,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:24,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:24,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:24,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:24,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:24,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:24,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:24,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:24,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:24,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:24,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113003181] [2021-02-24 00:16:24,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:24,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:24,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208891599] [2021-02-24 00:16:24,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:24,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:24,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:24,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:24,164 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-24 00:16:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:24,401 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-02-24 00:16:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:16:24,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 00:16:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:24,408 INFO L225 Difference]: With dead ends: 97 [2021-02-24 00:16:24,408 INFO L226 Difference]: Without dead ends: 75 [2021-02-24 00:16:24,409 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 [2021-02-24 00:16:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-24 00:16:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-02-24 00:16:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-24 00:16:24,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-02-24 00:16:24,446 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 38 [2021-02-24 00:16:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:24,447 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-02-24 00:16:24,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-02-24 00:16:24,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 00:16:24,449 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:24,449 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] [2021-02-24 00:16:24,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:24,450 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:24,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:24,451 INFO L82 PathProgramCache]: Analyzing trace with hash 388403656, now seen corresponding path program 1 times [2021-02-24 00:16:24,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:24,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652073644] [2021-02-24 00:16:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:24,490 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:24,523 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:24,569 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:16:24,570 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:24,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:24,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:24 BoogieIcfgContainer [2021-02-24 00:16:24,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:24,638 INFO L168 Benchmark]: Toolchain (without parser) took 2857.62 ms. Allocated memory is still 154.1 MB. Free memory was 131.0 MB in the beginning and 95.8 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:24,639 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:24,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.54 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 120.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:24,643 INFO L168 Benchmark]: Boogie Preprocessor took 46.36 ms. Allocated memory is still 154.1 MB. Free memory was 120.0 MB in the beginning and 118.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:24,644 INFO L168 Benchmark]: RCFGBuilder took 735.78 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 129.9 MB in the end (delta: -11.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:24,645 INFO L168 Benchmark]: TraceAbstraction took 1755.32 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 95.8 MB in the end (delta: 33.5 MB). Peak memory consumption was 34.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:24,653 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 154.1 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.54 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 120.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.36 ms. Allocated memory is still 154.1 MB. Free memory was 120.0 MB in the beginning and 118.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 735.78 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 129.9 MB in the end (delta: -11.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1755.32 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 95.8 MB in the end (delta: 33.5 MB). Peak memory consumption was 34.1 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; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] int sum[1]; VAL [\old(N)=0, N=1, sum={3:0}] [L29] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] sum[0] = 1 VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] COND TRUE i