/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/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:41:40,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:41:40,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:41:40,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:41:40,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:41:40,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:41:40,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:41:40,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:41:40,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:41:40,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:41:40,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:41:40,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:41:40,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:41:40,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:41:40,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:41:40,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:41:40,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:41:40,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:41:40,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:41:40,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:41:40,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:41:40,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:41:40,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:41:40,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:41:40,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:41:40,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:41:40,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:41:40,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:41:40,340 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 [2020-10-23 18:41:40,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:41:40,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:41:40,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:41:40,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:41:40,421 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:41:40,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:41:40,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:41:40,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:41:40,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:41:40,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:41:40,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:41:40,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:41:40,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:41:40,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:41:40,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:41:40,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:41:40,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:41:40,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:41:40,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:41:40,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:41:40,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:41:40,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:41:40,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:41:40,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:41:40,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:41:40,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:41:40,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:41:40,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:41:40,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:41:40,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:41:40,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:41:40,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:41:40,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:41:40,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:41:40,927 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:41:40,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2020-10-23 18:41:41,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bca1b27d/2ff19b3bf19e4edebfc0c296537abdcf/FLAG8f1e0cb3a [2020-10-23 18:41:41,581 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:41:41,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c [2020-10-23 18:41:41,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bca1b27d/2ff19b3bf19e4edebfc0c296537abdcf/FLAG8f1e0cb3a [2020-10-23 18:41:41,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bca1b27d/2ff19b3bf19e4edebfc0c296537abdcf [2020-10-23 18:41:41,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:41:41,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:41:41,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:41,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:41:41,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:41:41,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:41" (1/1) ... [2020-10-23 18:41:41,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b18556e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:41, skipping insertion in model container [2020-10-23 18:41:41,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:41" (1/1) ... [2020-10-23 18:41:41,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:41:42,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:41:42,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:42,241 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:41:42,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:42,279 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:41:42,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42 WrapperNode [2020-10-23 18:41:42,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:42,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:41:42,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:41:42,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:41:42,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (1/1) ... [2020-10-23 18:41:42,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (1/1) ... [2020-10-23 18:41:42,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (1/1) ... [2020-10-23 18:41:42,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (1/1) ... [2020-10-23 18:41:42,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (1/1) ... [2020-10-23 18:41:42,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (1/1) ... [2020-10-23 18:41:42,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (1/1) ... [2020-10-23 18:41:42,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:41:42,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:41:42,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:41:42,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:41:42,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (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 [2020-10-23 18:41:42,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:41:42,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:41:42,491 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:41:42,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:41:42,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:41:42,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:41:42,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:41:42,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:41:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:41:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:41:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:41:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:41:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:41:42,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:41:42,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:41:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:41:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:41:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:41:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:41:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:41:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:41:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:41:43,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:41:43,048 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 18:41:43,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:43 BoogieIcfgContainer [2020-10-23 18:41:43,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:41:43,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:41:43,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:41:43,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:41:43,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:41:41" (1/3) ... [2020-10-23 18:41:43,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c64dd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:43, skipping insertion in model container [2020-10-23 18:41:43,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:42" (2/3) ... [2020-10-23 18:41:43,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c64dd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:43, skipping insertion in model container [2020-10-23 18:41:43,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:43" (3/3) ... [2020-10-23 18:41:43,060 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4f.c [2020-10-23 18:41:43,076 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:41:43,081 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:41:43,093 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:41:43,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:41:43,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:41:43,122 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:41:43,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:41:43,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:41:43,122 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:41:43,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:41:43,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:41:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-23 18:41:43,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:41:43,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:43,148 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] [2020-10-23 18:41:43,149 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:43,155 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-23 18:41:43,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:43,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101474910] [2020-10-23 18:41:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:43,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:43,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101474910] [2020-10-23 18:41:43,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:43,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:41:43,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468023191] [2020-10-23 18:41:43,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:41:43,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:43,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:41:43,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:41:43,500 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-23 18:41:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:43,677 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-23 18:41:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:41:43,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-23 18:41:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:43,692 INFO L225 Difference]: With dead ends: 61 [2020-10-23 18:41:43,692 INFO L226 Difference]: Without dead ends: 27 [2020-10-23 18:41:43,698 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 [2020-10-23 18:41:43,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-23 18:41:43,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-23 18:41:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 18:41:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-23 18:41:43,766 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-23 18:41:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:43,767 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-23 18:41:43,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:41:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-23 18:41:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:41:43,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:43,770 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] [2020-10-23 18:41:43,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:41:43,771 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:43,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-23 18:41:43,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:43,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349091518] [2020-10-23 18:41:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:44,059 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 18:41:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:44,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:44,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349091518] [2020-10-23 18:41:44,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:44,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:41:44,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574593226] [2020-10-23 18:41:44,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:41:44,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:44,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:41:44,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:41:44,103 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-23 18:41:44,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:44,313 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-10-23 18:41:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:41:44,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-23 18:41:44,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:44,315 INFO L225 Difference]: With dead ends: 47 [2020-10-23 18:41:44,315 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 18:41:44,317 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 [2020-10-23 18:41:44,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 18:41:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-23 18:41:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 18:41:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-23 18:41:44,327 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2020-10-23 18:41:44,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:44,328 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-23 18:41:44,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:41:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-23 18:41:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:41:44,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:44,329 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] [2020-10-23 18:41:44,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:41:44,330 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:44,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:44,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-23 18:41:44,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:44,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583458984] [2020-10-23 18:41:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:44,375 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:44,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:44,445 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:41:44,445 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:41:44,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:41:44,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:41:44 BoogieIcfgContainer [2020-10-23 18:41:44,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:41:44,496 INFO L168 Benchmark]: Toolchain (without parser) took 2528.70 ms. Allocated memory is still 160.4 MB. Free memory was 118.2 MB in the beginning and 59.3 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:44,497 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:41:44,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.87 ms. Allocated memory is still 160.4 MB. Free memory was 117.5 MB in the beginning and 136.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:44,499 INFO L168 Benchmark]: Boogie Preprocessor took 104.64 ms. Allocated memory is still 160.4 MB. Free memory was 136.2 MB in the beginning and 144.7 MB in the end (delta: -8.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:44,500 INFO L168 Benchmark]: RCFGBuilder took 663.16 ms. Allocated memory is still 160.4 MB. Free memory was 144.7 MB in the beginning and 128.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:44,501 INFO L168 Benchmark]: TraceAbstraction took 1441.93 ms. Allocated memory is still 160.4 MB. Free memory was 127.9 MB in the beginning and 59.3 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:44,506 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 160.4 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.87 ms. Allocated memory is still 160.4 MB. Free memory was 117.5 MB in the beginning and 136.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.64 ms. Allocated memory is still 160.4 MB. Free memory was 136.2 MB in the beginning and 144.7 MB in the end (delta: -8.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 663.16 ms. Allocated memory is still 160.4 MB. Free memory was 144.7 MB in the beginning and 128.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1441.93 ms. Allocated memory is still 160.4 MB. Free memory was 127.9 MB in the beginning and 59.3 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.2 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] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] COND TRUE i