/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/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:04,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:04,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:04,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:17:04,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:17:04,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:17:04,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:17:04,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:17:04,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:17:04,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:17:04,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:17:04,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:17:04,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:04,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:04,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:04,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:04,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:04,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:04,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:04,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:04,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:04,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:04,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:04,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:04,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:17:04,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:04,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:04,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:04,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:17:04,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:04,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:04,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:04,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:04,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:04,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:04,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:04,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:04,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:04,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:04,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:04,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:04,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:04,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:04,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:04,367 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:04,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:04,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:04,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:04,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:04,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:04,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:04,368 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:04,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:04,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:04,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:04,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:04,789 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:04,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2021-02-21 21:17:04,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78174b313/1840a65c4c9c4ac984e6699ca30aa064/FLAGcdcc3d7fa [2021-02-21 21:17:05,667 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:05,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina1f.c [2021-02-21 21:17:05,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78174b313/1840a65c4c9c4ac984e6699ca30aa064/FLAGcdcc3d7fa [2021-02-21 21:17:06,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78174b313/1840a65c4c9c4ac984e6699ca30aa064 [2021-02-21 21:17:06,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:06,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:06,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:06,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:06,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:06,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71934f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06, skipping insertion in model container [2021-02-21 21:17:06,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:06,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:06,221 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina1f.c[589,602] [2021-02-21 21:17:06,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:06,252 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:06,267 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina1f.c[589,602] [2021-02-21 21:17:06,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:06,298 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:06,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06 WrapperNode [2021-02-21 21:17:06,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:06,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:06,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:06,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:06,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (1/1) ... [2021-02-21 21:17:06,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:06,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:06,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:06,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:06,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:17:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:17:06,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:06,512 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:06,512 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:06,513 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:06,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:06,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:17:06,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:17:06,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:17:06,514 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:17:06,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:06,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:17:06,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:06,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:06,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:07,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:07,014 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:17:07,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:07 BoogieIcfgContainer [2021-02-21 21:17:07,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:07,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:07,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:07,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:07,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:06" (1/3) ... [2021-02-21 21:17:07,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc17c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:07, skipping insertion in model container [2021-02-21 21:17:07,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:06" (2/3) ... [2021-02-21 21:17:07,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc17c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:07, skipping insertion in model container [2021-02-21 21:17:07,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:07" (3/3) ... [2021-02-21 21:17:07,025 INFO L111 eAbstractionObserver]: Analyzing ICFG sina1f.c [2021-02-21 21:17:07,032 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:07,036 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:07,055 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:07,077 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:07,077 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:07,077 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:07,078 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:07,078 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:07,078 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:07,078 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:07,078 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2021-02-21 21:17:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:17:07,111 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:07,112 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] [2021-02-21 21:17:07,113 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:07,119 INFO L82 PathProgramCache]: Analyzing trace with hash -774145788, now seen corresponding path program 1 times [2021-02-21 21:17:07,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:07,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810200165] [2021-02-21 21:17:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:07,217 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:07,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:07,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:07,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:07,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:07,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:07,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:17:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:07,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:07,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:07,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810200165] [2021-02-21 21:17:07,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:07,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:17:07,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340538428] [2021-02-21 21:17:07,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:17:07,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:17:07,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:07,599 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2021-02-21 21:17:07,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:07,864 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2021-02-21 21:17:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:17:07,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-21 21:17:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:07,876 INFO L225 Difference]: With dead ends: 111 [2021-02-21 21:17:07,877 INFO L226 Difference]: Without dead ends: 57 [2021-02-21 21:17:07,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:07,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-21 21:17:07,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-21 21:17:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-21 21:17:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-21 21:17:07,936 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 38 [2021-02-21 21:17:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:07,937 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-21 21:17:07,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:17:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-21 21:17:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:17:07,939 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:07,940 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] [2021-02-21 21:17:07,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:07,941 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1387502767, now seen corresponding path program 1 times [2021-02-21 21:17:07,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:07,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030304568] [2021-02-21 21:17:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:07,946 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:08,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:08,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:08,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:08,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:08,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:08,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:17:08,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:08,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:08,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:08,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:08,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:08,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:17:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:08,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:08,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:08,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030304568] [2021-02-21 21:17:08,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:08,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:17:08,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070093133] [2021-02-21 21:17:08,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:17:08,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:08,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:17:08,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:17:08,219 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-21 21:17:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:08,553 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-02-21 21:17:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:17:08,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-21 21:17:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:08,557 INFO L225 Difference]: With dead ends: 97 [2021-02-21 21:17:08,558 INFO L226 Difference]: Without dead ends: 75 [2021-02-21 21:17:08,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:17:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-21 21:17:08,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-02-21 21:17:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-21 21:17:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-02-21 21:17:08,579 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 38 [2021-02-21 21:17:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:08,580 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-02-21 21:17:08,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:17:08,580 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-02-21 21:17:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-21 21:17:08,582 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:08,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:17:08,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:08,582 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:08,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:08,583 INFO L82 PathProgramCache]: Analyzing trace with hash 388403656, now seen corresponding path program 1 times [2021-02-21 21:17:08,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:08,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625293465] [2021-02-21 21:17:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:08,616 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:08,618 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:17:08,657 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:17:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:17:08,689 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:17:08,732 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:17:08,732 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:17:08,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:17:08,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:17:08 BoogieIcfgContainer [2021-02-21 21:17:08,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:17:08,755 INFO L168 Benchmark]: Toolchain (without parser) took 2740.13 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 93.8 MB in the end (delta: 33.8 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:08,756 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:17:08,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:08,757 INFO L168 Benchmark]: Boogie Preprocessor took 74.73 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:08,758 INFO L168 Benchmark]: RCFGBuilder took 638.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 127.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:08,759 INFO L168 Benchmark]: TraceAbstraction took 1735.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 93.8 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:08,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.73 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 638.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 127.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1735.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 93.8 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i