/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:33,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:33,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:33,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:20:33,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:33,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:33,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:33,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:33,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:33,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:33,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:33,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:33,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:33,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:33,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:33,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:33,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:33,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:33,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:33,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:33,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:20:33,443 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:33,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:33,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:33,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:33,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:33,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:33,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:33,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:33,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:33,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:33,451 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:33,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:33,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:33,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:33,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:33,452 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:33,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:33,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:33,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:33,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:33,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:33,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:33,454 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:33,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:33,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:33,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:33,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:33,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:33,908 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:33,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2021-02-22 02:20:33,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d3e545d/7ebba7f35fa7491fb61e6d5084c6eaaf/FLAG5d7b91fc0 [2021-02-22 02:20:34,678 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:34,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2021-02-22 02:20:34,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d3e545d/7ebba7f35fa7491fb61e6d5084c6eaaf/FLAG5d7b91fc0 [2021-02-22 02:20:35,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d3e545d/7ebba7f35fa7491fb61e6d5084c6eaaf [2021-02-22 02:20:35,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:35,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:35,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:35,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:35,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:35,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4b4a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35, skipping insertion in model container [2021-02-22 02:20:35,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:35,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:35,232 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/sina4f.c[589,602] [2021-02-22 02:20:35,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:35,283 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:35,302 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/sina4f.c[589,602] [2021-02-22 02:20:35,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:35,361 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:35,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35 WrapperNode [2021-02-22 02:20:35,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:35,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:35,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:35,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:35,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (1/1) ... [2021-02-22 02:20:35,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:35,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:35,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:35,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:35,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (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 [2021-02-22 02:20:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:35,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:35,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:36,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:36,091 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 02:20:36,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:36 BoogieIcfgContainer [2021-02-22 02:20:36,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:36,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:36,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:36,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:36,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:35" (1/3) ... [2021-02-22 02:20:36,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2410fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:36, skipping insertion in model container [2021-02-22 02:20:36,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35" (2/3) ... [2021-02-22 02:20:36,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2410fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:36, skipping insertion in model container [2021-02-22 02:20:36,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:36" (3/3) ... [2021-02-22 02:20:36,103 INFO L111 eAbstractionObserver]: Analyzing ICFG sina4f.c [2021-02-22 02:20:36,110 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:36,116 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:36,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:36,165 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:36,166 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:36,166 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:36,166 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:36,166 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:36,167 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:36,167 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:36,167 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2021-02-22 02:20:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-22 02:20:36,199 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:36,201 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] [2021-02-22 02:20:36,201 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:36,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1103870, now seen corresponding path program 1 times [2021-02-22 02:20:36,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:36,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917128924] [2021-02-22 02:20:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:36,309 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:36,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917128924] [2021-02-22 02:20:36,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:36,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:36,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539962496] [2021-02-22 02:20:36,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:36,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:36,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:36,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:36,622 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2021-02-22 02:20:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:37,177 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2021-02-22 02:20:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:37,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2021-02-22 02:20:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:37,190 INFO L225 Difference]: With dead ends: 151 [2021-02-22 02:20:37,191 INFO L226 Difference]: Without dead ends: 77 [2021-02-22 02:20:37,197 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 [2021-02-22 02:20:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-22 02:20:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-02-22 02:20:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-22 02:20:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-02-22 02:20:37,287 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 44 [2021-02-22 02:20:37,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:37,288 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-02-22 02:20:37,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-02-22 02:20:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-22 02:20:37,294 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:37,295 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] [2021-02-22 02:20:37,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:37,296 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:37,297 INFO L82 PathProgramCache]: Analyzing trace with hash 564734934, now seen corresponding path program 1 times [2021-02-22 02:20:37,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:37,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932354398] [2021-02-22 02:20:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:37,317 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:37,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:37,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:37,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:37,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:37,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:37,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:37,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:37,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:37,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:37,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:37,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:37,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:37,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:37,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932354398] [2021-02-22 02:20:37,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:37,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:37,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30473403] [2021-02-22 02:20:37,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:37,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:37,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:37,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:37,540 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 5 states. [2021-02-22 02:20:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:38,102 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2021-02-22 02:20:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:38,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-02-22 02:20:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:38,107 INFO L225 Difference]: With dead ends: 151 [2021-02-22 02:20:38,107 INFO L226 Difference]: Without dead ends: 109 [2021-02-22 02:20:38,109 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 [2021-02-22 02:20:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-22 02:20:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 81. [2021-02-22 02:20:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-22 02:20:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-02-22 02:20:38,132 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 44 [2021-02-22 02:20:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:38,133 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-02-22 02:20:38,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-02-22 02:20:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-22 02:20:38,136 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:38,136 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, 1, 1, 1, 1] [2021-02-22 02:20:38,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:38,136 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:38,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:38,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1978493271, now seen corresponding path program 1 times [2021-02-22 02:20:38,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:38,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494264507] [2021-02-22 02:20:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:38,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:38,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:38,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:38,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:38,199 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:38,216 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:38,222 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:38,225 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:38,226 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:38,315 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:38,398 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:38,457 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:38,457 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:38,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:38,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:38 BoogieIcfgContainer [2021-02-22 02:20:38,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:38,481 INFO L168 Benchmark]: Toolchain (without parser) took 3460.79 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 127.6 MB in the beginning and 163.2 MB in the end (delta: -35.6 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:38,482 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:38,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.17 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 115.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:38,483 INFO L168 Benchmark]: Boogie Preprocessor took 52.87 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 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. [2021-02-22 02:20:38,484 INFO L168 Benchmark]: RCFGBuilder took 675.67 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 122.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:38,485 INFO L168 Benchmark]: TraceAbstraction took 2383.72 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 122.2 MB in the beginning and 163.2 MB in the end (delta: -41.0 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:38,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.17 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 115.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.87 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 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 675.67 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 122.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2383.72 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 122.2 MB in the beginning and 163.2 MB in the end (delta: -41.0 MB). Peak memory consumption was 70.3 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] long long *a = malloc(sizeof(long long)*N); [L30] long long *b = malloc(sizeof(long long)*N); [L32] sum[0] = 0 [L33] i=0 [L33] COND TRUE i