/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/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:11,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:11,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:11,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:16:11,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:11,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:11,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:11,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:11,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:11,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:11,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:11,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:11,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:11,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:11,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:11,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:11,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:16:11,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:16:11,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:16:11,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:16:11,511 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 00:16:11,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:11,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:11,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:11,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:11,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:11,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:11,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:11,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:11,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:11,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:11,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:11,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:11,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:11,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:11,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:11,529 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:11,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:11,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:11,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:11,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:11,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:11,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:11,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:11,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:11,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:11,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:11,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:11,963 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:11,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2021-02-24 00:16:12,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51b888a0/52699659658f4c9381f9af8a65d1b9c0/FLAG8375f8d35 [2021-02-24 00:16:12,723 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:12,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s2liff.c [2021-02-24 00:16:12,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51b888a0/52699659658f4c9381f9af8a65d1b9c0/FLAG8375f8d35 [2021-02-24 00:16:13,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51b888a0/52699659658f4c9381f9af8a65d1b9c0 [2021-02-24 00:16:13,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:13,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:13,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:13,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:13,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:13,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c3aaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13, skipping insertion in model container [2021-02-24 00:16:13,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:13,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:13,298 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/s2liff.c[589,602] [2021-02-24 00:16:13,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:13,329 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:13,344 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/s2liff.c[589,602] [2021-02-24 00:16:13,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:13,373 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:13,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13 WrapperNode [2021-02-24 00:16:13,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:13,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:13,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:13,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:13,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (1/1) ... [2021-02-24 00:16:13,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:13,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:13,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:13,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:13,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (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 00:16:13,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:16:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:13,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:13,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:16:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:16:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:16:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:14,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:14,060 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 00:16:14,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:14 BoogieIcfgContainer [2021-02-24 00:16:14,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:14,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:14,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:14,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:14,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:13" (1/3) ... [2021-02-24 00:16:14,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af35ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:14, skipping insertion in model container [2021-02-24 00:16:14,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:13" (2/3) ... [2021-02-24 00:16:14,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af35ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:14, skipping insertion in model container [2021-02-24 00:16:14,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:14" (3/3) ... [2021-02-24 00:16:14,072 INFO L111 eAbstractionObserver]: Analyzing ICFG s2liff.c [2021-02-24 00:16:14,080 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:14,085 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:14,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:14,139 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:14,139 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:14,140 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:14,140 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:14,140 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:14,140 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:14,140 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:14,140 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:14,160 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-24 00:16:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:16:14,172 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:14,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:14,174 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:14,182 INFO L82 PathProgramCache]: Analyzing trace with hash -276473570, now seen corresponding path program 1 times [2021-02-24 00:16:14,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:14,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61228060] [2021-02-24 00:16:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:14,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:14,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:14,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:14,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:14,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:14,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:14,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:14,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:14,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:14,704 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 00:16:14,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61228060] [2021-02-24 00:16:14,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:14,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:14,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97723012] [2021-02-24 00:16:14,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:14,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:14,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:14,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:14,743 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2021-02-24 00:16:14,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:14,976 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2021-02-24 00:16:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:14,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 00:16:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:14,987 INFO L225 Difference]: With dead ends: 131 [2021-02-24 00:16:14,988 INFO L226 Difference]: Without dead ends: 64 [2021-02-24 00:16:14,992 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 00:16:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-24 00:16:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-24 00:16:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-24 00:16:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-24 00:16:15,048 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-24 00:16:15,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:15,049 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-24 00:16:15,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-24 00:16:15,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:16:15,051 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:15,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:15,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:15,052 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1119969012, now seen corresponding path program 1 times [2021-02-24 00:16:15,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:15,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81009303] [2021-02-24 00:16:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:15,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:15,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:15,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:15,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:15,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:15,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:15,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:15,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:15,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:15,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:15,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:15,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:15,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:15,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:15,220 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 00:16:15,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81009303] [2021-02-24 00:16:15,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:15,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:15,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483590419] [2021-02-24 00:16:15,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:15,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:15,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:15,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:15,224 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2021-02-24 00:16:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:15,513 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-02-24 00:16:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:16:15,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 00:16:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:15,519 INFO L225 Difference]: With dead ends: 120 [2021-02-24 00:16:15,520 INFO L226 Difference]: Without dead ends: 89 [2021-02-24 00:16:15,522 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 00:16:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-24 00:16:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2021-02-24 00:16:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-24 00:16:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-24 00:16:15,555 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 38 [2021-02-24 00:16:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:15,558 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-24 00:16:15,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-24 00:16:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 00:16:15,566 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:15,567 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] [2021-02-24 00:16:15,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:15,570 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1778519661, now seen corresponding path program 1 times [2021-02-24 00:16:15,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:15,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998381896] [2021-02-24 00:16:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:15,685 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:15,723 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:15,761 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:16:15,761 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:15,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:15,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:15 BoogieIcfgContainer [2021-02-24 00:16:15,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:15,854 INFO L168 Benchmark]: Toolchain (without parser) took 2757.85 ms. Allocated memory is still 159.4 MB. Free memory was 136.4 MB in the beginning and 95.4 MB in the end (delta: 41.0 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:15,856 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 159.4 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:15,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.87 ms. Allocated memory is still 159.4 MB. Free memory was 135.2 MB in the beginning and 125.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:15,860 INFO L168 Benchmark]: Boogie Preprocessor took 44.02 ms. Allocated memory is still 159.4 MB. Free memory was 125.1 MB in the beginning and 123.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:15,862 INFO L168 Benchmark]: RCFGBuilder took 642.27 ms. Allocated memory is still 159.4 MB. Free memory was 123.5 MB in the beginning and 138.5 MB in the end (delta: -15.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:15,863 INFO L168 Benchmark]: TraceAbstraction took 1788.43 ms. Allocated memory is still 159.4 MB. Free memory was 138.0 MB in the beginning and 95.4 MB in the end (delta: 42.6 MB). Peak memory consumption was 43.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:15,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 159.4 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.87 ms. Allocated memory is still 159.4 MB. Free memory was 135.2 MB in the beginning and 125.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.02 ms. Allocated memory is still 159.4 MB. Free memory was 125.1 MB in the beginning and 123.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 642.27 ms. Allocated memory is still 159.4 MB. Free memory was 123.5 MB in the beginning and 138.5 MB in the end (delta: -15.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1788.43 ms. Allocated memory is still 159.4 MB. Free memory was 138.0 MB in the beginning and 95.4 MB in the end (delta: 42.6 MB). Peak memory consumption was 43.7 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; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] long long sum[1]; VAL [\old(N)=0, N=1, sum={5:0}] [L29] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}] [L31] sum[0] = N VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}] [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}] [L32] COND TRUE i