/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:40:47,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:40:47,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:40:47,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:40:47,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:40:47,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:40:47,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:40:47,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:40:47,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:40:47,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:40:47,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:40:47,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:40:47,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:40:47,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:40:47,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:40:47,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:40:47,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:40:47,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:40:47,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:40:47,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:40:47,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:40:47,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:40:47,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:40:47,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:40:47,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:40:47,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:40:47,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:40:47,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:40:47,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:40:47,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:40:47,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:40:47,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:40:47,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:40:47,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:40:47,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:40:47,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:40:47,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:40:47,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:40:47,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:40:47,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:40:47,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:40:47,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:40:47,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:40:47,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:40:47,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:40:47,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:40:47,295 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:40:47,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:40:47,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:40:47,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:40:47,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:40:47,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:40:47,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:40:47,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:40:47,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:40:47,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:40:47,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:40:47,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:40:47,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:40:47,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:40:47,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:40:47,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:40:47,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:40:47,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:40:47,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:40:47,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:40:47,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:40:47,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:40:47,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:40:47,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:40:47,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:40:47,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:40:47,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:40:47,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:40:47,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:40:47,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:40:47,642 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:40:47,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-08-21 20:40:47,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d4c247c8/a55f285166ac4c2f8f496ac14daba8b0/FLAGbf830b6db [2020-08-21 20:40:48,171 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:40:48,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c [2020-08-21 20:40:48,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d4c247c8/a55f285166ac4c2f8f496ac14daba8b0/FLAGbf830b6db [2020-08-21 20:40:48,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d4c247c8/a55f285166ac4c2f8f496ac14daba8b0 [2020-08-21 20:40:48,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:40:48,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:40:48,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:40:48,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:40:48,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:40:48,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48, skipping insertion in model container [2020-08-21 20:40:48,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:40:48,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:40:48,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:40:48,848 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:40:48,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:40:48,888 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:40:48,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48 WrapperNode [2020-08-21 20:40:48,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:40:48,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:40:48,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:40:48,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:40:49,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:49,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:49,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:49,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:49,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:49,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:49,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:49,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:40:49,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:40:49,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:40:49,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:40:49,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 20:40:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:40:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:40:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 20:40:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 20:40:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:40:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:40:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 20:40:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 20:40:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 20:40:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:40:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:40:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:40:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:40:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:40:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:40:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:40:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:40:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:40:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:40:49,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:40:49,427 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 20:40:49,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:40:49 BoogieIcfgContainer [2020-08-21 20:40:49,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:40:49,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:40:49,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:40:49,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:40:49,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:40:48" (1/3) ... [2020-08-21 20:40:49,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d70a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:40:49, skipping insertion in model container [2020-08-21 20:40:49,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (2/3) ... [2020-08-21 20:40:49,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d70a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:40:49, skipping insertion in model container [2020-08-21 20:40:49,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:40:49" (3/3) ... [2020-08-21 20:40:49,440 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-08-21 20:40:49,452 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:40:49,459 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:40:49,475 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:40:49,501 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:40:49,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:40:49,501 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:40:49,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:40:49,502 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:40:49,502 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:40:49,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:40:49,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:40:49,524 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 20:40:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 20:40:49,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:40:49,533 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] [2020-08-21 20:40:49,533 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:40:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:40:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-21 20:40:49,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:40:49,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935977873] [2020-08-21 20:40:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:40:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:40:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:40:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:40:49,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935977873] [2020-08-21 20:40:49,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:40:49,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:40:49,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681081550] [2020-08-21 20:40:49,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:40:49,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:40:49,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:40:49,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:40:49,785 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 20:40:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:40:49,897 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-21 20:40:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:40:49,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 20:40:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:40:49,908 INFO L225 Difference]: With dead ends: 54 [2020-08-21 20:40:49,909 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 20:40:49,913 INFO L675 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 [2020-08-21 20:40:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 20:40:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 20:40:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 20:40:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-21 20:40:49,957 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-21 20:40:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:40:49,958 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-21 20:40:49,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:40:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-21 20:40:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 20:40:49,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:40:49,959 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] [2020-08-21 20:40:49,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:40:49,960 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:40:49,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:40:49,960 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-21 20:40:49,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:40:49,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142717562] [2020-08-21 20:40:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:40:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:50,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:40:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:40:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:40:50,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142717562] [2020-08-21 20:40:50,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:40:50,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 20:40:50,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316297040] [2020-08-21 20:40:50,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 20:40:50,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:40:50,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 20:40:50,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:40:50,095 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-21 20:40:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:40:50,218 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 20:40:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 20:40:50,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 20:40:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:40:50,220 INFO L225 Difference]: With dead ends: 40 [2020-08-21 20:40:50,220 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 20:40:50,221 INFO L675 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 [2020-08-21 20:40:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 20:40:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-08-21 20:40:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-21 20:40:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-08-21 20:40:50,230 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-08-21 20:40:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:40:50,231 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-08-21 20:40:50,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 20:40:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-08-21 20:40:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 20:40:50,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:40:50,232 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] [2020-08-21 20:40:50,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:40:50,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:40:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:40:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-21 20:40:50,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:40:50,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584971592] [2020-08-21 20:40:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:40:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:40:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:50,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:40:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:40:50,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584971592] [2020-08-21 20:40:50,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:40:50,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 20:40:50,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222711738] [2020-08-21 20:40:50,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:40:50,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:40:50,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:40:50,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:40:50,597 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-08-21 20:40:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:40:51,044 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-08-21 20:40:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:40:51,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-08-21 20:40:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:40:51,048 INFO L225 Difference]: With dead ends: 42 [2020-08-21 20:40:51,049 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 20:40:51,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-08-21 20:40:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 20:40:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-08-21 20:40:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 20:40:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 20:40:51,064 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-08-21 20:40:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:40:51,065 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 20:40:51,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:40:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 20:40:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 20:40:51,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:40:51,067 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] [2020-08-21 20:40:51,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:40:51,070 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:40:51,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:40:51,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-08-21 20:40:51,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:40:51,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630751703] [2020-08-21 20:40:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:40:51,103 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 20:40:51,103 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 20:40:51,104 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:40:51,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:40:51,141 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 20:40:51,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:40:51 BoogieIcfgContainer [2020-08-21 20:40:51,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:40:51,148 INFO L168 Benchmark]: Toolchain (without parser) took 2536.94 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 102.6 MB in the beginning and 140.6 MB in the end (delta: -38.1 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:51,153 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 20:40:51,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.11 ms. Allocated memory is still 140.5 MB. Free memory was 102.1 MB in the beginning and 91.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:51,155 INFO L168 Benchmark]: Boogie Preprocessor took 191.57 ms. Allocated memory was 140.5 MB in the beginning and 206.0 MB in the end (delta: 65.5 MB). Free memory was 91.7 MB in the beginning and 183.4 MB in the end (delta: -91.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:51,155 INFO L168 Benchmark]: RCFGBuilder took 350.18 ms. Allocated memory is still 206.0 MB. Free memory was 183.4 MB in the beginning and 166.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:51,158 INFO L168 Benchmark]: TraceAbstraction took 1711.54 ms. Allocated memory was 206.0 MB in the beginning and 233.8 MB in the end (delta: 27.8 MB). Free memory was 165.6 MB in the beginning and 140.6 MB in the end (delta: 25.0 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:51,162 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.11 ms. Allocated memory is still 140.5 MB. Free memory was 102.1 MB in the beginning and 91.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.57 ms. Allocated memory was 140.5 MB in the beginning and 206.0 MB in the end (delta: 65.5 MB). Free memory was 91.7 MB in the beginning and 183.4 MB in the end (delta: -91.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 350.18 ms. Allocated memory is still 206.0 MB. Free memory was 183.4 MB in the beginning and 166.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1711.54 ms. Allocated memory was 206.0 MB in the beginning and 233.8 MB in the end (delta: 27.8 MB). Free memory was 165.6 MB in the beginning and 140.6 MB in the end (delta: 25.0 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i