/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:56,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:56,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:56,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:15:56,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:15:56,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:15:56,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:15:56,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:15:56,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:15:56,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:15:56,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:15:56,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:15:56,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:15:56,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:15:56,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:15:56,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:15:56,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:15:56,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:15:56,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:15:56,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:15:56,555 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 00:15:56,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:56,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:56,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:56,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:56,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:56,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:56,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:56,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:56,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:56,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:56,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:56,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:56,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:56,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:56,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:56,589 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:56,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:56,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:56,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:56,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:56,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:56,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:56,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:57,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:57,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:57,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:57,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:57,057 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:57,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-24 00:15:57,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b966f8c7/f1123588ad7c447d95e013e86295e442/FLAGa5e077085 [2021-02-24 00:15:57,746 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:57,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-24 00:15:57,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b966f8c7/f1123588ad7c447d95e013e86295e442/FLAGa5e077085 [2021-02-24 00:15:58,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b966f8c7/f1123588ad7c447d95e013e86295e442 [2021-02-24 00:15:58,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:58,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:58,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:58,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:58,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:58,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ea886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58, skipping insertion in model container [2021-02-24 00:15:58,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:58,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:58,316 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/ms1f.c[587,600] [2021-02-24 00:15:58,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:58,346 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:58,363 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/ms1f.c[587,600] [2021-02-24 00:15:58,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:58,390 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:58,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58 WrapperNode [2021-02-24 00:15:58,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:58,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:58,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:58,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:58,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (1/1) ... [2021-02-24 00:15:58,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:58,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:58,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:58,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:58,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (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 00:15:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:58,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:58,545 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:59,158 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:59,159 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 00:15:59,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:59 BoogieIcfgContainer [2021-02-24 00:15:59,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:59,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:59,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:59,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:59,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:58" (1/3) ... [2021-02-24 00:15:59,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489019db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:59, skipping insertion in model container [2021-02-24 00:15:59,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:58" (2/3) ... [2021-02-24 00:15:59,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489019db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:59, skipping insertion in model container [2021-02-24 00:15:59,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:59" (3/3) ... [2021-02-24 00:15:59,172 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2021-02-24 00:15:59,183 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:59,189 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:59,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:59,247 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:59,248 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:59,248 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:59,248 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:59,248 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:59,249 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:59,249 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:59,249 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2021-02-24 00:15:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 00:15:59,287 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:59,289 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] [2021-02-24 00:15:59,289 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:59,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1183518233, now seen corresponding path program 1 times [2021-02-24 00:15:59,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:59,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547143304] [2021-02-24 00:15:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:59,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:59,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:59,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:59,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:59,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:59,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:59,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:59,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-24 00:15:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:59,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:59,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:59,811 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 00:15:59,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547143304] [2021-02-24 00:15:59,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:59,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:59,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316355992] [2021-02-24 00:15:59,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:59,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:59,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:59,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:59,845 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2021-02-24 00:16:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:00,081 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2021-02-24 00:16:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:00,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-24 00:16:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:00,092 INFO L225 Difference]: With dead ends: 110 [2021-02-24 00:16:00,093 INFO L226 Difference]: Without dead ends: 57 [2021-02-24 00:16:00,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-24 00:16:00,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-24 00:16:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-24 00:16:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-24 00:16:00,150 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 42 [2021-02-24 00:16:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:00,151 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-24 00:16:00,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:00,151 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-24 00:16:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 00:16:00,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:00,153 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] [2021-02-24 00:16:00,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:00,154 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash -232895933, now seen corresponding path program 1 times [2021-02-24 00:16:00,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:00,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090616293] [2021-02-24 00:16:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:00,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:00,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:00,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:00,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:00,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:00,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:00,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:00,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:00,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:00,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:00,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:00,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-24 00:16:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:00,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:00,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:00,318 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 00:16:00,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090616293] [2021-02-24 00:16:00,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:00,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:00,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275119543] [2021-02-24 00:16:00,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:00,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:00,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:00,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:00,328 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-24 00:16:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:00,632 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2021-02-24 00:16:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:16:00,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-24 00:16:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:00,635 INFO L225 Difference]: With dead ends: 83 [2021-02-24 00:16:00,635 INFO L226 Difference]: Without dead ends: 65 [2021-02-24 00:16:00,637 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 00:16:00,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-24 00:16:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-02-24 00:16:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 00:16:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-24 00:16:00,653 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 42 [2021-02-24 00:16:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:00,654 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-24 00:16:00,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-24 00:16:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 00:16:00,656 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:00,657 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] [2021-02-24 00:16:00,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:00,657 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1631302411, now seen corresponding path program 1 times [2021-02-24 00:16:00,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:00,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974013607] [2021-02-24 00:16:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:00,694 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:00,729 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:00,772 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:16:00,772 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:00,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:00,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:00 BoogieIcfgContainer [2021-02-24 00:16:00,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:00,847 INFO L168 Benchmark]: Toolchain (without parser) took 2723.72 ms. Allocated memory was 166.7 MB in the beginning and 205.5 MB in the end (delta: 38.8 MB). Free memory was 143.3 MB in the beginning and 174.8 MB in the end (delta: -31.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:00,850 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 166.7 MB. Free memory is still 140.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:00,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.26 ms. Allocated memory is still 166.7 MB. Free memory was 142.3 MB in the beginning and 131.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:00,854 INFO L168 Benchmark]: Boogie Preprocessor took 46.94 ms. Allocated memory is still 166.7 MB. Free memory was 131.8 MB in the beginning and 130.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:00,855 INFO L168 Benchmark]: RCFGBuilder took 721.31 ms. Allocated memory is still 166.7 MB. Free memory was 130.3 MB in the beginning and 110.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:00,858 INFO L168 Benchmark]: TraceAbstraction took 1681.39 ms. Allocated memory was 166.7 MB in the beginning and 205.5 MB in the end (delta: 38.8 MB). Free memory was 110.1 MB in the beginning and 174.8 MB in the end (delta: -64.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:00,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 166.7 MB. Free memory is still 140.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.26 ms. Allocated memory is still 166.7 MB. Free memory was 142.3 MB in the beginning and 131.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.94 ms. Allocated memory is still 166.7 MB. Free memory was 131.8 MB in the beginning and 130.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 721.31 ms. Allocated memory is still 166.7 MB. Free memory was 130.3 MB in the beginning and 110.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1681.39 ms. Allocated memory was 166.7 MB in the beginning and 205.5 MB in the end (delta: 38.8 MB). Free memory was 110.1 MB in the beginning and 174.8 MB in the end (delta: -64.7 MB). There was no memory consumed. 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)=118, 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] int sum[1]; VAL [\old(N)=0, N=1, sum={8:0}] [L29] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={8:0}] [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={8:0}] [L31] COND TRUE i