/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/s32iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:24,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:24,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:24,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:47:24,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:24,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:24,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:24,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:24,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:24,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:24,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:24,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:24,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:24,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:24,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:24,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:24,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:24,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:24,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:24,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:24,518 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 18:47:24,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:24,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:24,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:24,547 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:24,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:24,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:24,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:24,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:24,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:24,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:24,549 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:24,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:24,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:24,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:24,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:24,551 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:24,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:24,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:24,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:24,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:24,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:24,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:24,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:24,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:24,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:24,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:24,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:24,987 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:24,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s32iff.c [2021-02-23 18:47:25,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0977928e8/617a3642af2848048b73d0e6eea365b5/FLAG7f9ce4327 [2021-02-23 18:47:25,689 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:25,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s32iff.c [2021-02-23 18:47:25,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0977928e8/617a3642af2848048b73d0e6eea365b5/FLAG7f9ce4327 [2021-02-23 18:47:26,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0977928e8/617a3642af2848048b73d0e6eea365b5 [2021-02-23 18:47:26,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:26,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:26,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:26,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:26,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:26,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412ec5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26, skipping insertion in model container [2021-02-23 18:47:26,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:26,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:26,265 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/s32iff.c[589,602] [2021-02-23 18:47:26,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:26,307 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:26,325 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/s32iff.c[589,602] [2021-02-23 18:47:26,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:26,396 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:26,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26 WrapperNode [2021-02-23 18:47:26,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:26,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:26,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:26,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:26,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (1/1) ... [2021-02-23 18:47:26,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:26,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:26,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:26,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:26,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (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 18:47:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:27,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:27,355 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:47:27,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:27 BoogieIcfgContainer [2021-02-23 18:47:27,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:27,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:27,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:27,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:27,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:26" (1/3) ... [2021-02-23 18:47:27,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f483b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:27, skipping insertion in model container [2021-02-23 18:47:27,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:26" (2/3) ... [2021-02-23 18:47:27,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f483b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:27, skipping insertion in model container [2021-02-23 18:47:27,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:27" (3/3) ... [2021-02-23 18:47:27,370 INFO L111 eAbstractionObserver]: Analyzing ICFG s32iff.c [2021-02-23 18:47:27,378 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:27,384 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:27,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:27,442 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:27,442 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:27,443 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:27,443 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:27,443 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:27,443 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:27,443 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:27,444 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-23 18:47:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:47:27,485 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:27,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:27,486 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:27,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:27,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1439408661, now seen corresponding path program 1 times [2021-02-23 18:47:27,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:27,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570742187] [2021-02-23 18:47:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:27,603 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:27,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:27,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:27,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:27,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:27,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:27,904 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 18:47:27,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570742187] [2021-02-23 18:47:27,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:27,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:27,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759838609] [2021-02-23 18:47:27,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:27,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:27,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:27,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:27,932 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2021-02-23 18:47:28,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:28,264 INFO L93 Difference]: Finished difference Result 149 states and 168 transitions. [2021-02-23 18:47:28,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:28,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-23 18:47:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:28,276 INFO L225 Difference]: With dead ends: 149 [2021-02-23 18:47:28,277 INFO L226 Difference]: Without dead ends: 73 [2021-02-23 18:47:28,281 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 18:47:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-23 18:47:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-23 18:47:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 18:47:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-23 18:47:28,353 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 38 [2021-02-23 18:47:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:28,354 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-23 18:47:28,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-23 18:47:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:47:28,356 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:28,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:28,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:28,357 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:28,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:28,358 INFO L82 PathProgramCache]: Analyzing trace with hash -415145042, now seen corresponding path program 1 times [2021-02-23 18:47:28,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:28,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975073124] [2021-02-23 18:47:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:28,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:28,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:28,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:28,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:28,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:28,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:28,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:28,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:28,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:28,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:28,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:28,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:28,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:28,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:28,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:28,597 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 18:47:28,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975073124] [2021-02-23 18:47:28,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:28,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:28,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241219723] [2021-02-23 18:47:28,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:28,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:28,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:28,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:28,601 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2021-02-23 18:47:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:29,034 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2021-02-23 18:47:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:29,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-23 18:47:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:29,040 INFO L225 Difference]: With dead ends: 147 [2021-02-23 18:47:29,040 INFO L226 Difference]: Without dead ends: 107 [2021-02-23 18:47:29,048 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 [2021-02-23 18:47:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-23 18:47:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2021-02-23 18:47:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 18:47:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-23 18:47:29,086 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 38 [2021-02-23 18:47:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:29,086 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-23 18:47:29,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-23 18:47:29,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-23 18:47:29,089 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:29,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:29,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:29,089 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:29,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1781170039, now seen corresponding path program 1 times [2021-02-23 18:47:29,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:29,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613562367] [2021-02-23 18:47:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:29,127 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:29,130 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:29,190 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:29,263 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:29,316 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:29,317 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:29,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:29,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:29 BoogieIcfgContainer [2021-02-23 18:47:29,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:29,340 INFO L168 Benchmark]: Toolchain (without parser) took 3280.16 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 78.8 MB in the end (delta: 48.5 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:29,341 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:29,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.52 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:29,343 INFO L168 Benchmark]: Boogie Preprocessor took 50.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:29,344 INFO L168 Benchmark]: RCFGBuilder took 907.11 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 123.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:29,345 INFO L168 Benchmark]: TraceAbstraction took 1976.81 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 78.8 MB in the end (delta: 44.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:29,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 324.52 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 907.11 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 123.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1976.81 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 78.8 MB in the end (delta: 44.4 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); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i