/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ms2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:37,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:37,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:37,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:37,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:37,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:37,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:37,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:37,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:37,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:37,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:37,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:37,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:37,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:37,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:37,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:37,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:37,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:37,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:37,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:37,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:37,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:37,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:37,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:37,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:37,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:37,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:37,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:37,289 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 21:16:37,301 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:37,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:37,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:37,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:37,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:37,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:37,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:37,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:37,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:37,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:37,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:37,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:37,306 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:37,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:37,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:37,307 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:37,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:37,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:37,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:37,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:37,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:37,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:37,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:37,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:37,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:37,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:37,740 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:37,740 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:37,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms2f.c [2021-02-21 21:16:37,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09eeedaba/97543451f288410eb045cc504c7617d4/FLAG3575ccc98 [2021-02-21 21:16:38,457 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:38,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms2f.c [2021-02-21 21:16:38,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09eeedaba/97543451f288410eb045cc504c7617d4/FLAG3575ccc98 [2021-02-21 21:16:38,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09eeedaba/97543451f288410eb045cc504c7617d4 [2021-02-21 21:16:38,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:38,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:38,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:38,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:38,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:38,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:38" (1/1) ... [2021-02-21 21:16:38,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408c7112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:38, skipping insertion in model container [2021-02-21 21:16:38,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:38" (1/1) ... [2021-02-21 21:16:38,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:38,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:39,043 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/ms2f.c[587,600] [2021-02-21 21:16:39,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:39,071 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:39,086 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/ms2f.c[587,600] [2021-02-21 21:16:39,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:39,111 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:39,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39 WrapperNode [2021-02-21 21:16:39,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:39,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:39,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:39,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:39,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (1/1) ... [2021-02-21 21:16:39,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (1/1) ... [2021-02-21 21:16:39,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (1/1) ... [2021-02-21 21:16:39,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (1/1) ... [2021-02-21 21:16:39,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (1/1) ... [2021-02-21 21:16:39,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (1/1) ... [2021-02-21 21:16:39,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (1/1) ... [2021-02-21 21:16:39,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:39,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:39,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:39,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:39,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (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 21:16:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:39,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:39,681 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:16:39,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:39 BoogieIcfgContainer [2021-02-21 21:16:39,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:39,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:39,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:39,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:39,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:38" (1/3) ... [2021-02-21 21:16:39,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451f27f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:39, skipping insertion in model container [2021-02-21 21:16:39,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:39" (2/3) ... [2021-02-21 21:16:39,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451f27f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:39, skipping insertion in model container [2021-02-21 21:16:39,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:39" (3/3) ... [2021-02-21 21:16:39,694 INFO L111 eAbstractionObserver]: Analyzing ICFG ms2f.c [2021-02-21 21:16:39,702 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:39,707 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:39,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:39,755 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:39,755 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:39,755 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:39,755 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:39,755 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:39,756 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:39,756 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:39,756 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2021-02-21 21:16:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 21:16:39,787 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:39,788 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 21:16:39,788 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:39,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1183518233, now seen corresponding path program 1 times [2021-02-21 21:16:39,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:39,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380713537] [2021-02-21 21:16:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:39,893 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:40,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:40,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:40,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:40,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:16:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:40,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:40,166 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 21:16:40,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380713537] [2021-02-21 21:16:40,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:40,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:40,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459985290] [2021-02-21 21:16:40,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:40,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:40,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:40,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:40,195 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2021-02-21 21:16:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:40,380 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2021-02-21 21:16:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:40,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-21 21:16:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:40,391 INFO L225 Difference]: With dead ends: 110 [2021-02-21 21:16:40,391 INFO L226 Difference]: Without dead ends: 57 [2021-02-21 21:16:40,395 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 21:16:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-21 21:16:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-21 21:16:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-21 21:16:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-21 21:16:40,448 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 42 [2021-02-21 21:16:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:40,449 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-21 21:16:40,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-21 21:16:40,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 21:16:40,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:40,451 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 21:16:40,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:40,452 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:40,454 INFO L82 PathProgramCache]: Analyzing trace with hash -232895933, now seen corresponding path program 1 times [2021-02-21 21:16:40,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:40,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623670491] [2021-02-21 21:16:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:40,458 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:40,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:40,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:40,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:40,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:40,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:40,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:40,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:16:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:40,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:40,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:40,718 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 21:16:40,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623670491] [2021-02-21 21:16:40,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:40,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:40,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426410414] [2021-02-21 21:16:40,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:40,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:40,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:40,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:40,729 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-21 21:16:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:41,009 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2021-02-21 21:16:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:41,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-21 21:16:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:41,012 INFO L225 Difference]: With dead ends: 83 [2021-02-21 21:16:41,012 INFO L226 Difference]: Without dead ends: 65 [2021-02-21 21:16:41,014 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 21:16:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-21 21:16:41,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-02-21 21:16:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-21 21:16:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-21 21:16:41,030 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 42 [2021-02-21 21:16:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:41,030 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-21 21:16:41,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-21 21:16:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 21:16:41,033 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:41,033 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 21:16:41,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:41,033 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:41,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1631302411, now seen corresponding path program 1 times [2021-02-21 21:16:41,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:41,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286850649] [2021-02-21 21:16:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:41,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:41,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:16:44,262 WARN L202 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 27 [2021-02-21 21:16:44,266 WARN L141 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-02-21 21:16:44,274 WARN L147 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size 32 [2021-02-21 21:16:44,275 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:16:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:44,324 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:44,397 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:44,447 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:16:44,448 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:44,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:44,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:44 BoogieIcfgContainer [2021-02-21 21:16:44,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:44,471 INFO L168 Benchmark]: Toolchain (without parser) took 5630.83 ms. Allocated memory was 164.6 MB in the beginning and 224.4 MB in the end (delta: 59.8 MB). Free memory was 140.5 MB in the beginning and 150.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 50.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:44,471 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 164.6 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:44,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.71 ms. Allocated memory is still 164.6 MB. Free memory was 139.5 MB in the beginning and 129.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:44,473 INFO L168 Benchmark]: Boogie Preprocessor took 39.81 ms. Allocated memory is still 164.6 MB. Free memory was 129.6 MB in the beginning and 128.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:44,474 INFO L168 Benchmark]: RCFGBuilder took 530.69 ms. Allocated memory is still 164.6 MB. Free memory was 127.8 MB in the beginning and 142.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:44,475 INFO L168 Benchmark]: TraceAbstraction took 4782.30 ms. Allocated memory was 164.6 MB in the beginning and 224.4 MB in the end (delta: 59.8 MB). Free memory was 142.2 MB in the beginning and 150.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:44,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 164.6 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.71 ms. Allocated memory is still 164.6 MB. Free memory was 139.5 MB in the beginning and 129.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.81 ms. Allocated memory is still 164.6 MB. Free memory was 129.6 MB in the beginning and 128.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 530.69 ms. Allocated memory is still 164.6 MB. Free memory was 127.8 MB in the beginning and 142.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4782.30 ms. Allocated memory was 164.6 MB in the beginning and 224.4 MB in the end (delta: 59.8 MB). Free memory was 142.2 MB in the beginning and 150.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 52.4 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 N) [L15] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 62 SDslu, 37 SDs, 0 SdLazy, 134 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...