/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:43:57,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:43:57,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:43:57,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:43:57,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:43:57,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:43:57,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:43:57,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:43:57,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:43:57,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:43:57,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:43:57,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:43:57,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:43:57,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:43:57,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:43:57,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:43:57,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:43:57,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:43:57,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:43:57,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:43:57,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:43:57,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:43:57,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:43:57,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:43:57,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:43:57,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:43:57,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:43:57,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:43:57,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:43:57,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:43:57,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:43:57,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:43:57,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:43:57,754 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:43:57,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:43:57,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:43:57,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:43:57,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:43:57,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:43:57,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:43:57,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:43:57,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:43:57,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:43:57,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:43:57,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:43:57,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:43:57,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:43:57,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:43:57,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:43:57,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:43:57,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:43:57,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:43:57,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:43:57,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:43:57,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:43:57,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:43:57,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:43:57,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:43:57,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:43:58,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:43:58,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:43:58,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:43:58,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:43:58,204 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:43:58,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-11-06 22:43:58,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec399c28/301257f167154a03b4a2b27771978ebd/FLAG9856ce9a5 [2020-11-06 22:43:58,914 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:43:58,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c [2020-11-06 22:43:58,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec399c28/301257f167154a03b4a2b27771978ebd/FLAG9856ce9a5 [2020-11-06 22:43:59,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec399c28/301257f167154a03b4a2b27771978ebd [2020-11-06 22:43:59,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:43:59,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:43:59,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:43:59,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:43:59,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:43:59,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0eefda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59, skipping insertion in model container [2020-11-06 22:43:59,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:43:59,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:43:59,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:43:59,487 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:43:59,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:43:59,529 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:43:59,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59 WrapperNode [2020-11-06 22:43:59,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:43:59,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:43:59,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:43:59,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:43:59,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (1/1) ... [2020-11-06 22:43:59,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:43:59,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:43:59,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:43:59,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:43:59,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (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 [2020-11-06 22:43:59,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:43:59,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:43:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:43:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:43:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:43:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:43:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:43:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:43:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:43:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:43:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:43:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:43:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:43:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:43:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:43:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:43:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:43:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:43:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:43:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:43:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:43:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:00,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:00,069 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:44:00,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:00 BoogieIcfgContainer [2020-11-06 22:44:00,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:00,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:00,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:00,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:00,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:59" (1/3) ... [2020-11-06 22:44:00,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe1b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:00, skipping insertion in model container [2020-11-06 22:44:00,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:59" (2/3) ... [2020-11-06 22:44:00,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe1b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:00, skipping insertion in model container [2020-11-06 22:44:00,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:00" (3/3) ... [2020-11-06 22:44:00,084 INFO L111 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-11-06 22:44:00,100 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:00,103 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:00,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:00,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:00,144 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:00,144 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:00,144 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:00,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:00,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:00,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:00,145 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-06 22:44:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 22:44:00,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:00,170 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] [2020-11-06 22:44:00,171 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:00,178 INFO L82 PathProgramCache]: Analyzing trace with hash 371341983, now seen corresponding path program 1 times [2020-11-06 22:44:00,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:00,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640745728] [2020-11-06 22:44:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:00,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640745728] [2020-11-06 22:44:00,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:00,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:00,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14542374] [2020-11-06 22:44:00,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:00,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:00,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:00,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:00,534 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-11-06 22:44:00,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:00,651 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-11-06 22:44:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:00,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-06 22:44:00,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:00,662 INFO L225 Difference]: With dead ends: 65 [2020-11-06 22:44:00,662 INFO L226 Difference]: Without dead ends: 29 [2020-11-06 22:44:00,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:00,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-06 22:44:00,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-06 22:44:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:44:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-11-06 22:44:00,711 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2020-11-06 22:44:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:00,711 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-11-06 22:44:00,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-11-06 22:44:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 22:44:00,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:00,713 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] [2020-11-06 22:44:00,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:00,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:00,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1793608214, now seen corresponding path program 1 times [2020-11-06 22:44:00,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:00,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72439312] [2020-11-06 22:44:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:00,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72439312] [2020-11-06 22:44:00,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:00,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:00,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865655780] [2020-11-06 22:44:00,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:00,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:00,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:00,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:00,881 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-11-06 22:44:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:01,107 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2020-11-06 22:44:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:01,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-06 22:44:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:01,111 INFO L225 Difference]: With dead ends: 50 [2020-11-06 22:44:01,111 INFO L226 Difference]: Without dead ends: 36 [2020-11-06 22:44:01,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-06 22:44:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-06 22:44:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:44:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-11-06 22:44:01,133 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-11-06 22:44:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:01,134 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-11-06 22:44:01,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-11-06 22:44:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:44:01,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:01,135 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] [2020-11-06 22:44:01,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:01,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:01,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:01,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2090381425, now seen corresponding path program 1 times [2020-11-06 22:44:01,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:01,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202025683] [2020-11-06 22:44:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:01,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:44:01,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202025683] [2020-11-06 22:44:01,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524502008] [2020-11-06 22:44:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:01,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:44:01,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:01,683 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-06 22:44:01,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:01,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:01,691 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:44:01,691 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-11-06 22:44:01,741 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-06 22:44:01,742 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:01,745 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:01,745 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:44:01,745 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-06 22:44:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:44:01,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:44:01,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2020-11-06 22:44:01,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012049309] [2020-11-06 22:44:01,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 22:44:01,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:01,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 22:44:01,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:44:01,779 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 13 states. [2020-11-06 22:44:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:01,977 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-11-06 22:44:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:44:01,978 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-11-06 22:44:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:01,979 INFO L225 Difference]: With dead ends: 50 [2020-11-06 22:44:01,979 INFO L226 Difference]: Without dead ends: 36 [2020-11-06 22:44:01,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-11-06 22:44:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-06 22:44:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-11-06 22:44:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-06 22:44:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-06 22:44:01,988 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 31 [2020-11-06 22:44:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:01,989 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-06 22:44:01,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 22:44:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-06 22:44:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:44:01,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:01,990 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] [2020-11-06 22:44:02,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:44:02,206 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:02,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:02,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1617779857, now seen corresponding path program 1 times [2020-11-06 22:44:02,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:02,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44408791] [2020-11-06 22:44:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:02,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:02,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:02,298 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:02,298 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:02,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:44:02,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:02 BoogieIcfgContainer [2020-11-06 22:44:02,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:02,350 INFO L168 Benchmark]: Toolchain (without parser) took 3092.77 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 70.8 MB in the end (delta: 56.4 MB). Peak memory consumption was 57.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:02,351 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 100.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:02,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.32 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:02,352 INFO L168 Benchmark]: Boogie Preprocessor took 55.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:02,353 INFO L168 Benchmark]: RCFGBuilder took 487.58 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 129.3 MB in the end (delta: -14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:02,354 INFO L168 Benchmark]: TraceAbstraction took 2271.87 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 70.8 MB in the end (delta: 58.0 MB). Peak memory consumption was 58.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:02,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 100.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.32 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 487.58 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 129.3 MB in the end (delta: -14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2271.87 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 70.8 MB in the end (delta: 58.0 MB). Peak memory consumption was 58.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [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; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1, sum={3:0}] [L32] COND TRUE i