/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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:39,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:39,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:39,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:15:40,033 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 00:15:40,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:40,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:40,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:40,060 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:40,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:40,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:40,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:40,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:40,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:40,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:40,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:40,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:40,063 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:40,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:40,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:40,064 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:40,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:40,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:40,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:40,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:40,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:40,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:40,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:40,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:40,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:40,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:40,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:40,521 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:40,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2021-02-24 00:15:40,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b081904/ab45c0ae926f409dbc8a5d6e9f9fce76/FLAG99c94d106 [2021-02-24 00:15:41,227 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:41,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2021-02-24 00:15:41,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b081904/ab45c0ae926f409dbc8a5d6e9f9fce76/FLAG99c94d106 [2021-02-24 00:15:41,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b081904/ab45c0ae926f409dbc8a5d6e9f9fce76 [2021-02-24 00:15:41,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:41,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:41,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:41,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:41,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:41,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61aac5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41, skipping insertion in model container [2021-02-24 00:15:41,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:41,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:41,876 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/condnf.c[589,602] [2021-02-24 00:15:41,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:41,904 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:41,919 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/condnf.c[589,602] [2021-02-24 00:15:41,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:41,943 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:41,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41 WrapperNode [2021-02-24 00:15:41,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:41,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:41,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:41,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:41,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (1/1) ... [2021-02-24 00:15:41,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:41,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:41,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:41,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:41,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (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 00:15:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:42,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:42,552 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 00:15:42,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:42 BoogieIcfgContainer [2021-02-24 00:15:42,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:42,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:42,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:42,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:42,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:41" (1/3) ... [2021-02-24 00:15:42,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a304a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:42, skipping insertion in model container [2021-02-24 00:15:42,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:41" (2/3) ... [2021-02-24 00:15:42,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a304a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:42, skipping insertion in model container [2021-02-24 00:15:42,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:42" (3/3) ... [2021-02-24 00:15:42,566 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2021-02-24 00:15:42,574 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:42,579 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:42,603 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:42,632 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:42,632 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:42,632 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:42,632 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:42,632 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:42,633 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:42,633 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:42,633 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2021-02-24 00:15:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:15:42,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:42,666 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] [2021-02-24 00:15:42,667 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:42,676 INFO L82 PathProgramCache]: Analyzing trace with hash -407844847, now seen corresponding path program 1 times [2021-02-24 00:15:42,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:42,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539723176] [2021-02-24 00:15:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:42,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:42,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:42,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:42,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:43,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:43,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:43,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:43,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:43,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:43,164 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 00:15:43,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539723176] [2021-02-24 00:15:43,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:43,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:43,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674585015] [2021-02-24 00:15:43,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:43,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:43,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:43,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:43,202 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2021-02-24 00:15:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:43,395 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2021-02-24 00:15:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:43,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-24 00:15:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:43,408 INFO L225 Difference]: With dead ends: 113 [2021-02-24 00:15:43,409 INFO L226 Difference]: Without dead ends: 60 [2021-02-24 00:15:43,413 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 00:15:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-24 00:15:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-02-24 00:15:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 00:15:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-02-24 00:15:43,474 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 36 [2021-02-24 00:15:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:43,475 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-02-24 00:15:43,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-02-24 00:15:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:15:43,477 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:43,477 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] [2021-02-24 00:15:43,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:43,478 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:43,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:43,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1753803708, now seen corresponding path program 1 times [2021-02-24 00:15:43,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:43,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271956599] [2021-02-24 00:15:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:43,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:43,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:43,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:43,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:43,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:43,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:43,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:43,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:43,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:43,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:43,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:43,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:43,650 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 00:15:43,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271956599] [2021-02-24 00:15:43,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:43,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:15:43,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487935472] [2021-02-24 00:15:43,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:15:43,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:43,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:15:43,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:15:43,657 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 5 states. [2021-02-24 00:15:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:44,000 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2021-02-24 00:15:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:15:44,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-24 00:15:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:44,004 INFO L225 Difference]: With dead ends: 110 [2021-02-24 00:15:44,005 INFO L226 Difference]: Without dead ends: 83 [2021-02-24 00:15:44,006 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 00:15:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-24 00:15:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2021-02-24 00:15:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-24 00:15:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-02-24 00:15:44,029 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 36 [2021-02-24 00:15:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:44,029 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-02-24 00:15:44,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:15:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-02-24 00:15:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-24 00:15:44,031 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:44,032 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] [2021-02-24 00:15:44,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:44,032 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:44,033 INFO L82 PathProgramCache]: Analyzing trace with hash 146462172, now seen corresponding path program 1 times [2021-02-24 00:15:44,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:44,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723370459] [2021-02-24 00:15:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:44,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:44,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:44,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:44,255 WARN L141 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-02-24 00:15:44,257 WARN L147 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size 15 [2021-02-24 00:15:44,278 WARN L141 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-02-24 00:15:44,281 WARN L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-02-24 00:15:44,327 WARN L141 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-02-24 00:15:44,328 WARN L147 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size 11 [2021-02-24 00:15:44,341 WARN L141 QuantifierPusher]: treesize reduction 17, result has 67.3 percent of original size [2021-02-24 00:15:44,343 WARN L147 QuantifierPusher]: treesize reduction 17, result has 67.3 percent of original size 35 [2021-02-24 00:15:44,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:44,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:15:44,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:15:44,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:44,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:44,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:44,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:44,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:44,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:15:44,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723370459] [2021-02-24 00:15:44,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:15:44,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:15:44,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653087579] [2021-02-24 00:15:44,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:15:44,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:44,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:15:44,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:15:44,433 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 11 states. [2021-02-24 00:15:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:44,920 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2021-02-24 00:15:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:15:44,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2021-02-24 00:15:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:44,923 INFO L225 Difference]: With dead ends: 116 [2021-02-24 00:15:44,923 INFO L226 Difference]: Without dead ends: 114 [2021-02-24 00:15:44,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:15:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-02-24 00:15:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 78. [2021-02-24 00:15:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 00:15:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-02-24 00:15:44,944 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 51 [2021-02-24 00:15:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:44,945 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-02-24 00:15:44,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:15:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-02-24 00:15:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 00:15:44,947 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:44,947 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 00:15:44,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:15:44,948 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:44,948 INFO L82 PathProgramCache]: Analyzing trace with hash -904490591, now seen corresponding path program 1 times [2021-02-24 00:15:44,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:44,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953037209] [2021-02-24 00:15:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:15:44,982 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:15:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:15:45,009 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:15:45,047 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:15:45,047 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:45,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:15:45,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:45 BoogieIcfgContainer [2021-02-24 00:15:45,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:45,108 INFO L168 Benchmark]: Toolchain (without parser) took 3502.23 ms. Allocated memory was 174.1 MB in the beginning and 227.5 MB in the end (delta: 53.5 MB). Free memory was 149.9 MB in the beginning and 169.9 MB in the end (delta: -20.0 MB). Peak memory consumption was 34.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:45,109 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 174.1 MB. Free memory is still 147.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:45,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.97 ms. Allocated memory is still 174.1 MB. Free memory was 148.9 MB in the beginning and 139.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:45,110 INFO L168 Benchmark]: Boogie Preprocessor took 43.76 ms. Allocated memory is still 174.1 MB. Free memory was 139.0 MB in the beginning and 137.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:45,113 INFO L168 Benchmark]: RCFGBuilder took 564.64 ms. Allocated memory is still 174.1 MB. Free memory was 137.4 MB in the beginning and 152.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:45,114 INFO L168 Benchmark]: TraceAbstraction took 2546.80 ms. Allocated memory was 174.1 MB in the beginning and 227.5 MB in the end (delta: 53.5 MB). Free memory was 151.5 MB in the beginning and 169.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 36.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:45,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 174.1 MB. Free memory is still 147.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 324.97 ms. Allocated memory is still 174.1 MB. Free memory was 148.9 MB in the beginning and 139.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.76 ms. Allocated memory is still 174.1 MB. Free memory was 139.0 MB in the beginning and 137.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 564.64 ms. Allocated memory is still 174.1 MB. Free memory was 137.4 MB in the beginning and 152.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2546.80 ms. Allocated memory was 174.1 MB in the beginning and 227.5 MB in the end (delta: 53.5 MB). Free memory was 151.5 MB in the beginning and 169.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 36.0 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] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] COND TRUE i N VAL [\old(N)=0, a={-1:0}, a[i]=8, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L38] EXPR a[i] VAL [\old(N)=0, a={-1:0}, a[i]=8, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L38] a[i] = a[i] VAL [\old(N)=0, a={-1:0}, a[i]=8, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND FALSE !(i