/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/sina3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:33,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:33,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:33,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:20:33,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:33,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:33,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:33,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:33,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:33,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:33,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:33,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:33,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:33,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:33,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:33,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:33,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:33,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:33,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:33,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:33,232 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 02:20:33,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:33,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:33,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:33,259 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:33,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:33,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:33,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:33,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:33,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:33,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:33,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:33,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:33,262 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:33,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:33,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:33,263 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:33,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:33,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:33,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:33,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:33,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:33,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:33,264 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:33,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:33,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:33,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:33,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:33,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:33,645 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:33,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina3f.c [2021-02-22 02:20:33,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff876e7c/89f919e22455402f943eeac758ade6e1/FLAGaef71137a [2021-02-22 02:20:34,357 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:34,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina3f.c [2021-02-22 02:20:34,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff876e7c/89f919e22455402f943eeac758ade6e1/FLAGaef71137a [2021-02-22 02:20:34,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff876e7c/89f919e22455402f943eeac758ade6e1 [2021-02-22 02:20:34,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:34,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:34,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:34,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:34,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:34,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:34" (1/1) ... [2021-02-22 02:20:34,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8f7fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:34, skipping insertion in model container [2021-02-22 02:20:34,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:34" (1/1) ... [2021-02-22 02:20:34,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:34,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:34,948 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/sina3f.c[589,602] [2021-02-22 02:20:34,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:34,982 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:34,996 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/sina3f.c[589,602] [2021-02-22 02:20:35,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:35,024 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:35,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:35 WrapperNode [2021-02-22 02:20:35,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:35,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:35,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:35,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:35,041 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 02:20:35,041 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 02:20:35,050 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 02:20:35,050 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 02:20:35,059 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 02:20:35,065 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 02:20:35,067 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 02:20:35,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:35,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:35,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:35,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:35,072 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 02:20:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:35,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:35,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:35,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:35,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:35,828 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:35,828 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 02:20:35,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:35 BoogieIcfgContainer [2021-02-22 02:20:35,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:35,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:35,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:35,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:35,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:34" (1/3) ... [2021-02-22 02:20:35,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24140a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:35, skipping insertion in model container [2021-02-22 02:20:35,837 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 02:20:35,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24140a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:35, skipping insertion in model container [2021-02-22 02:20:35,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:35" (3/3) ... [2021-02-22 02:20:35,839 INFO L111 eAbstractionObserver]: Analyzing ICFG sina3f.c [2021-02-22 02:20:35,846 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:35,852 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:35,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:35,897 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:35,898 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:35,898 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:35,898 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:35,898 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:35,898 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:35,899 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:35,899 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-02-22 02:20:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-22 02:20:35,927 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:35,928 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 02:20:35,929 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:35,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1729300024, now seen corresponding path program 1 times [2021-02-22 02:20:35,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:35,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234263217] [2021-02-22 02:20:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:36,024 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,273 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 02:20:36,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234263217] [2021-02-22 02:20:36,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:36,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:36,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815277889] [2021-02-22 02:20:36,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:36,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:36,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:36,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:36,299 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-02-22 02:20:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:36,578 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2021-02-22 02:20:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:36,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2021-02-22 02:20:36,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:36,589 INFO L225 Difference]: With dead ends: 147 [2021-02-22 02:20:36,589 INFO L226 Difference]: Without dead ends: 75 [2021-02-22 02:20:36,593 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 02:20:36,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-22 02:20:36,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-02-22 02:20:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-22 02:20:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-02-22 02:20:36,652 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 44 [2021-02-22 02:20:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:36,653 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-02-22 02:20:36,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-02-22 02:20:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-22 02:20:36,655 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:36,656 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 02:20:36,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:36,656 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:36,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1192689582, now seen corresponding path program 1 times [2021-02-22 02:20:36,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:36,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492115298] [2021-02-22 02:20:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:36,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:36,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:36,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:36,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:36,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:36,894 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 02:20:36,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492115298] [2021-02-22 02:20:36,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:36,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:36,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168607800] [2021-02-22 02:20:36,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:36,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:36,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:36,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:36,898 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 5 states. [2021-02-22 02:20:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:37,335 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2021-02-22 02:20:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:37,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-02-22 02:20:37,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:37,340 INFO L225 Difference]: With dead ends: 145 [2021-02-22 02:20:37,340 INFO L226 Difference]: Without dead ends: 105 [2021-02-22 02:20:37,342 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 02:20:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-02-22 02:20:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2021-02-22 02:20:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-22 02:20:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-02-22 02:20:37,367 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 44 [2021-02-22 02:20:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:37,367 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-02-22 02:20:37,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-02-22 02:20:37,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-22 02:20:37,374 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:37,374 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] [2021-02-22 02:20:37,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:37,374 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:37,378 INFO L82 PathProgramCache]: Analyzing trace with hash -217676284, now seen corresponding path program 1 times [2021-02-22 02:20:37,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:37,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349787225] [2021-02-22 02:20:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:37,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:37,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:37,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:37,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:37,448 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:37,461 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:37,467 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:37,470 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:37,471 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:37,553 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:37,630 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:37,680 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:37,681 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:37,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:37,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:37 BoogieIcfgContainer [2021-02-22 02:20:37,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:37,703 INFO L168 Benchmark]: Toolchain (without parser) took 2950.01 ms. Allocated memory was 151.0 MB in the beginning and 202.4 MB in the end (delta: 51.4 MB). Free memory was 128.1 MB in the beginning and 123.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 56.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:37,704 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:37,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:37,705 INFO L168 Benchmark]: Boogie Preprocessor took 43.51 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:37,706 INFO L168 Benchmark]: RCFGBuilder took 759.53 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 127.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:37,707 INFO L168 Benchmark]: TraceAbstraction took 1869.64 ms. Allocated memory was 151.0 MB in the beginning and 202.4 MB in the end (delta: 51.4 MB). Free memory was 127.4 MB in the beginning and 123.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 55.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:37,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.51 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 759.53 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 127.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1869.64 ms. Allocated memory was 151.0 MB in the beginning and 202.4 MB in the end (delta: 51.4 MB). Free memory was 127.4 MB in the beginning and 123.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 55.7 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] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 [L33] COND TRUE i