/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/res2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:40,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:40,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:40,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:40,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:40,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:40,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:40,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:40,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:40,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:40,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:40,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:40,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:40,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:40,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:40,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:40,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:40,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:40,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:40,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:40,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:40,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:40,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:40,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:40,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:40,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:40,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:40,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:40,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:40,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:40,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:40,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:40,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:40,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:40,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:40,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:40,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:40,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:40,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:40,396 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:40,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:40,396 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:40,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:40,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:40,397 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:40,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:40,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:40,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:40,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:40,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:40,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:40,399 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:40,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:40,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:40,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:40,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:40,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:40,856 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:40,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2021-02-24 04:46:40,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59565612b/94cfcba3c6f147b29b8511d25d9e12ba/FLAG0a0cbb027 [2021-02-24 04:46:41,598 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:41,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2f.c [2021-02-24 04:46:41,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59565612b/94cfcba3c6f147b29b8511d25d9e12ba/FLAG0a0cbb027 [2021-02-24 04:46:41,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59565612b/94cfcba3c6f147b29b8511d25d9e12ba [2021-02-24 04:46:41,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:41,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:41,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:41,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:41,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:41,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:41" (1/1) ... [2021-02-24 04:46:41,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71dd3c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:41, skipping insertion in model container [2021-02-24 04:46:41,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:41" (1/1) ... [2021-02-24 04:46:42,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:42,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:42,170 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/res2f.c[588,601] [2021-02-24 04:46:42,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:42,210 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:42,232 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/res2f.c[588,601] [2021-02-24 04:46:42,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:42,294 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:42,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42 WrapperNode [2021-02-24 04:46:42,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:42,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:42,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:42,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:42,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (1/1) ... [2021-02-24 04:46:42,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (1/1) ... [2021-02-24 04:46:42,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (1/1) ... [2021-02-24 04:46:42,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (1/1) ... [2021-02-24 04:46:42,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (1/1) ... [2021-02-24 04:46:42,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (1/1) ... [2021-02-24 04:46:42,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (1/1) ... [2021-02-24 04:46:42,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:42,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:42,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:42,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:42,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (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 [2021-02-24 04:46:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:43,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:43,054 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-24 04:46:43,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:43 BoogieIcfgContainer [2021-02-24 04:46:43,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:43,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:43,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:43,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:43,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:41" (1/3) ... [2021-02-24 04:46:43,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5342e503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:43, skipping insertion in model container [2021-02-24 04:46:43,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:42" (2/3) ... [2021-02-24 04:46:43,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5342e503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:43, skipping insertion in model container [2021-02-24 04:46:43,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:43" (3/3) ... [2021-02-24 04:46:43,065 INFO L111 eAbstractionObserver]: Analyzing ICFG res2f.c [2021-02-24 04:46:43,072 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:43,078 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:43,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:43,124 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:43,124 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:43,125 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:43,125 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:43,125 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:43,125 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:43,125 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:43,125 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2021-02-24 04:46:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 04:46:43,156 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:43,157 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] [2021-02-24 04:46:43,158 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:43,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1739395432, now seen corresponding path program 1 times [2021-02-24 04:46:43,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:43,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953881876] [2021-02-24 04:46:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:43,259 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:43,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:43,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:43,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:43,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:43,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:43,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:43,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:43,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:43,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:43,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953881876] [2021-02-24 04:46:43,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:43,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:43,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824384404] [2021-02-24 04:46:43,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:43,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:43,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:43,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:43,653 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2021-02-24 04:46:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:44,012 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2021-02-24 04:46:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:44,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2021-02-24 04:46:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:44,023 INFO L225 Difference]: With dead ends: 173 [2021-02-24 04:46:44,024 INFO L226 Difference]: Without dead ends: 85 [2021-02-24 04:46:44,028 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 [2021-02-24 04:46:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-24 04:46:44,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-02-24 04:46:44,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-24 04:46:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2021-02-24 04:46:44,085 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 48 [2021-02-24 04:46:44,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:44,085 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2021-02-24 04:46:44,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2021-02-24 04:46:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 04:46:44,088 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:44,088 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] [2021-02-24 04:46:44,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:44,089 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:44,090 INFO L82 PathProgramCache]: Analyzing trace with hash -869560636, now seen corresponding path program 1 times [2021-02-24 04:46:44,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:44,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428617922] [2021-02-24 04:46:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:44,093 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:44,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:44,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:44,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:44,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:44,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:44,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:44,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:44,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:44,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:44,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:44,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:44,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:44,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:44,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428617922] [2021-02-24 04:46:44,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:44,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:44,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808333552] [2021-02-24 04:46:44,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:44,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:44,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:44,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:44,279 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 5 states. [2021-02-24 04:46:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:44,573 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2021-02-24 04:46:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:44,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2021-02-24 04:46:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:44,580 INFO L225 Difference]: With dead ends: 169 [2021-02-24 04:46:44,581 INFO L226 Difference]: Without dead ends: 121 [2021-02-24 04:46:44,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-24 04:46:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 91. [2021-02-24 04:46:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-24 04:46:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2021-02-24 04:46:44,633 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 48 [2021-02-24 04:46:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:44,636 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2021-02-24 04:46:44,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2021-02-24 04:46:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-24 04:46:44,640 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:44,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:44,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:44,644 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:44,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1909009957, now seen corresponding path program 1 times [2021-02-24 04:46:44,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:44,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170484718] [2021-02-24 04:46:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:44,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:44,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:44,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:44,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:44,694 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:44,710 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:44,716 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:44,719 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:44,720 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:44,817 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:44,880 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:44,933 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:44,933 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:44,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:44,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:44 BoogieIcfgContainer [2021-02-24 04:46:44,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:44,956 INFO L168 Benchmark]: Toolchain (without parser) took 2983.08 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 76.8 MB in the end (delta: 51.2 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:44,957 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.5 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:44,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.30 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:44,959 INFO L168 Benchmark]: Boogie Preprocessor took 49.55 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:44,960 INFO L168 Benchmark]: RCFGBuilder took 710.42 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 120.8 MB in the end (delta: -6.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:44,960 INFO L168 Benchmark]: TraceAbstraction took 1896.89 ms. Allocated memory is still 151.0 MB. Free memory was 120.2 MB in the beginning and 76.8 MB in the end (delta: 43.4 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:44,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.5 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.30 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.55 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 710.42 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 120.8 MB in the end (delta: -6.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1896.89 ms. Allocated memory is still 151.0 MB. Free memory was 120.2 MB in the beginning and 76.8 MB in the end (delta: 43.4 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 1 [L34] i=0 [L34] COND TRUE i