/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:15,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:15,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:15,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:47:15,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:15,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:15,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:15,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:15,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:15,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:15,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:15,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:15,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:15,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:15,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:15,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:15,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:15,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:15,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:15,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:15,256 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 18:47:15,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:15,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:15,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:15,285 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:15,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:15,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:15,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:15,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:15,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:15,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:15,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:15,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:15,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:15,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:15,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:15,289 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:15,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:15,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:15,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:15,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:15,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:15,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:15,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:15,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:15,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:15,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:15,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:15,758 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:15,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2021-02-23 18:47:15,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cf942c5/662b9450e07443a1a7bd8bbd09e7fd0f/FLAGd3ea67271 [2021-02-23 18:47:16,474 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:16,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1f.c [2021-02-23 18:47:16,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cf942c5/662b9450e07443a1a7bd8bbd09e7fd0f/FLAGd3ea67271 [2021-02-23 18:47:16,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cf942c5/662b9450e07443a1a7bd8bbd09e7fd0f [2021-02-23 18:47:16,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:16,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:16,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:16,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:16,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:16,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:16" (1/1) ... [2021-02-23 18:47:16,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e84b659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:16, skipping insertion in model container [2021-02-23 18:47:16,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:16" (1/1) ... [2021-02-23 18:47:16,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:16,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:17,117 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/res1f.c[588,601] [2021-02-23 18:47:17,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:17,148 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:17,160 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/res1f.c[588,601] [2021-02-23 18:47:17,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:17,189 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:17,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17 WrapperNode [2021-02-23 18:47:17,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:17,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:17,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:17,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:17,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (1/1) ... [2021-02-23 18:47:17,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (1/1) ... [2021-02-23 18:47:17,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (1/1) ... [2021-02-23 18:47:17,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (1/1) ... [2021-02-23 18:47:17,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (1/1) ... [2021-02-23 18:47:17,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (1/1) ... [2021-02-23 18:47:17,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (1/1) ... [2021-02-23 18:47:17,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:17,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:17,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:17,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:17,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (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 18:47:17,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:17,344 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:17,344 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:17,344 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:17,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:17,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:17,835 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 18:47:17,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:17 BoogieIcfgContainer [2021-02-23 18:47:17,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:17,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:17,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:17,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:17,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:16" (1/3) ... [2021-02-23 18:47:17,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670cf05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:17, skipping insertion in model container [2021-02-23 18:47:17,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:17" (2/3) ... [2021-02-23 18:47:17,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670cf05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:17, skipping insertion in model container [2021-02-23 18:47:17,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:17" (3/3) ... [2021-02-23 18:47:17,860 INFO L111 eAbstractionObserver]: Analyzing ICFG res1f.c [2021-02-23 18:47:17,867 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:17,873 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:17,897 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:17,942 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:17,942 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:17,942 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:17,942 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:17,943 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:17,943 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:17,943 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:17,943 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:17,975 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-02-23 18:47:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 18:47:17,990 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:17,991 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] [2021-02-23 18:47:17,992 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:18,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1991564409, now seen corresponding path program 1 times [2021-02-23 18:47:18,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:18,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008356243] [2021-02-23 18:47:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:18,116 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:18,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:18,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:18,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:18,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:18,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:18,484 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 18:47:18,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008356243] [2021-02-23 18:47:18,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:18,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:18,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201929647] [2021-02-23 18:47:18,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:18,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:18,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:18,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:18,511 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2021-02-23 18:47:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:18,710 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2021-02-23 18:47:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:18,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-23 18:47:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:18,721 INFO L225 Difference]: With dead ends: 137 [2021-02-23 18:47:18,722 INFO L226 Difference]: Without dead ends: 67 [2021-02-23 18:47:18,726 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 18:47:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-02-23 18:47:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-02-23 18:47:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 18:47:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-23 18:47:18,780 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 42 [2021-02-23 18:47:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:18,781 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-23 18:47:18,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-23 18:47:18,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 18:47:18,783 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:18,784 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] [2021-02-23 18:47:18,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:18,784 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:18,786 INFO L82 PathProgramCache]: Analyzing trace with hash 749526049, now seen corresponding path program 1 times [2021-02-23 18:47:18,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:18,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623887945] [2021-02-23 18:47:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:18,790 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:18,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:18,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:18,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:18,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:18,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:18,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:18,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:18,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:18,956 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 18:47:18,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623887945] [2021-02-23 18:47:18,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:18,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:18,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437108891] [2021-02-23 18:47:18,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:18,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:18,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:18,964 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 5 states. [2021-02-23 18:47:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:19,267 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2021-02-23 18:47:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:19,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-23 18:47:19,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:19,270 INFO L225 Difference]: With dead ends: 123 [2021-02-23 18:47:19,270 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 18:47:19,271 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 18:47:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 18:47:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2021-02-23 18:47:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-23 18:47:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-02-23 18:47:19,288 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 42 [2021-02-23 18:47:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:19,289 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-02-23 18:47:19,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-02-23 18:47:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-23 18:47:19,292 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:19,292 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, 1, 1, 1, 1, 1] [2021-02-23 18:47:19,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:19,292 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:19,293 INFO L82 PathProgramCache]: Analyzing trace with hash 558292563, now seen corresponding path program 1 times [2021-02-23 18:47:19,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:19,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130285539] [2021-02-23 18:47:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:19,319 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:19,321 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:19,388 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:19,438 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:19,494 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:19,495 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:19,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:19,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:19 BoogieIcfgContainer [2021-02-23 18:47:19,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:19,518 INFO L168 Benchmark]: Toolchain (without parser) took 2654.63 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 81.2 MB in the end (delta: 46.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:19,518 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:19,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:19,520 INFO L168 Benchmark]: Boogie Preprocessor took 42.39 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:19,521 INFO L168 Benchmark]: RCFGBuilder took 604.67 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 125.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:19,527 INFO L168 Benchmark]: TraceAbstraction took 1675.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 81.2 MB in the end (delta: 43.9 MB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:19,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.39 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 604.67 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 125.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1675.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 81.2 MB in the end (delta: 43.9 MB). Peak memory consumption was 45.4 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] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 [L33] COND TRUE i