/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:27,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:27,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:27,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:16:27,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:27,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:27,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:27,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:27,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:27,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:27,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:27,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:27,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:27,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:27,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:27,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:27,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:16:27,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:16:27,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:16:27,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:16:27,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:27,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:27,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:27,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:27,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:27,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:27,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:27,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:27,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:27,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:27,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:27,484 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:27,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:27,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:27,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:27,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:27,485 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:27,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:27,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:27,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:27,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:27,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:27,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:27,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:27,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:27,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:27,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:27,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:27,965 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:27,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2021-02-24 00:16:28,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2941eae41/7c23438dde0a4855843461cc834bbde4/FLAG92e235f8b [2021-02-24 00:16:28,641 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:28,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss4f.c [2021-02-24 00:16:28,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2941eae41/7c23438dde0a4855843461cc834bbde4/FLAG92e235f8b [2021-02-24 00:16:28,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2941eae41/7c23438dde0a4855843461cc834bbde4 [2021-02-24 00:16:28,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:28,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:28,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:28,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:28,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:28,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:28" (1/1) ... [2021-02-24 00:16:28,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fc809c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:28, skipping insertion in model container [2021-02-24 00:16:28,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:28" (1/1) ... [2021-02-24 00:16:28,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:29,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:29,173 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/ss4f.c[587,600] [2021-02-24 00:16:29,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:29,217 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:29,232 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/ss4f.c[587,600] [2021-02-24 00:16:29,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:29,261 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:29,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29 WrapperNode [2021-02-24 00:16:29,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:29,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:29,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:29,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:29,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:29,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:29,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:29,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:29,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (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 00:16:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:16:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:16:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:16:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:16:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:30,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:30,063 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 00:16:30,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:30 BoogieIcfgContainer [2021-02-24 00:16:30,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:30,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:30,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:30,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:30,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:28" (1/3) ... [2021-02-24 00:16:30,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c66322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:30, skipping insertion in model container [2021-02-24 00:16:30,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (2/3) ... [2021-02-24 00:16:30,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c66322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:30, skipping insertion in model container [2021-02-24 00:16:30,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:30" (3/3) ... [2021-02-24 00:16:30,079 INFO L111 eAbstractionObserver]: Analyzing ICFG ss4f.c [2021-02-24 00:16:30,087 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:30,092 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:30,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:30,154 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:30,154 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:30,155 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:30,155 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:30,155 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:30,155 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:30,155 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:30,155 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:30,180 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-02-24 00:16:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:16:30,197 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:30,198 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 00:16:30,198 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:30,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1524324706, now seen corresponding path program 1 times [2021-02-24 00:16:30,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:30,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132117613] [2021-02-24 00:16:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:30,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:30,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:30,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:30,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:30,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:30,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:30,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-24 00:16:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:30,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:30,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:30,574 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 00:16:30,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132117613] [2021-02-24 00:16:30,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:30,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:30,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677932067] [2021-02-24 00:16:30,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:30,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:30,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:30,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:30,601 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2021-02-24 00:16:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:30,847 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2021-02-24 00:16:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:30,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2021-02-24 00:16:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:30,865 INFO L225 Difference]: With dead ends: 150 [2021-02-24 00:16:30,866 INFO L226 Difference]: Without dead ends: 77 [2021-02-24 00:16:30,873 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 00:16:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-24 00:16:30,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-02-24 00:16:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-24 00:16:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2021-02-24 00:16:30,931 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 48 [2021-02-24 00:16:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:30,932 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2021-02-24 00:16:30,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2021-02-24 00:16:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:16:30,936 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:30,936 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 00:16:30,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:30,937 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1519877049, now seen corresponding path program 1 times [2021-02-24 00:16:30,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:30,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908436727] [2021-02-24 00:16:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:31,008 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:16:31,009 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:16:31,009 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:31,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:31,040 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:16:31,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:31 BoogieIcfgContainer [2021-02-24 00:16:31,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:31,043 INFO L168 Benchmark]: Toolchain (without parser) took 2077.90 ms. Allocated memory is still 153.1 MB. Free memory was 129.8 MB in the beginning and 73.6 MB in the end (delta: 56.2 MB). Peak memory consumption was 56.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:31,044 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:31,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.89 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 118.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:31,046 INFO L168 Benchmark]: Boogie Preprocessor took 43.06 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 116.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:31,047 INFO L168 Benchmark]: RCFGBuilder took 759.32 ms. Allocated memory is still 153.1 MB. Free memory was 116.7 MB in the beginning and 127.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:31,049 INFO L168 Benchmark]: TraceAbstraction took 970.38 ms. Allocated memory is still 153.1 MB. Free memory was 127.1 MB in the beginning and 73.6 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:31,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.89 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 118.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.06 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 116.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 759.32 ms. Allocated memory is still 153.1 MB. Free memory was 116.7 MB in the beginning and 127.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 970.38 ms. Allocated memory is still 153.1 MB. Free memory was 127.1 MB in the beginning and 73.6 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible 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); [L31] sum[0] = 0 [L32] i=0 [L32] COND FALSE !(i