/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/skippedu.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:58:50,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:58:50,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:58:50,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:58:50,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:58:50,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:58:50,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:58:50,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:58:50,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:58:50,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:58:50,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:58:50,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:58:50,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:58:50,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:58:50,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:58:50,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:58:50,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:58:50,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:58:50,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:58:50,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:58:50,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:58:50,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:58:50,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:58:50,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:58:50,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:58:50,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:58:50,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:58:50,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:58:50,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:58:50,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:58:50,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:58:50,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:58:50,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:58:50,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:58:50,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:58:50,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:58:50,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:58:50,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:58:50,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:58:50,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:58:50,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:58:50,245 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 [2020-10-26 19:58:50,274 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:58:50,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:58:50,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:58:50,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:58:50,276 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:58:50,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:58:50,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:58:50,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:58:50,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:58:50,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:58:50,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:58:50,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:58:50,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:58:50,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:58:50,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:58:50,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:58:50,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:58:50,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:58:50,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:58:50,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:58:50,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:58:50,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:58:50,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:58:50,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:58:50,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:58:50,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:58:50,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:58:50,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:58:50,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:58:50,282 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:58:50,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:58:50,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:58:50,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:58:50,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:58:50,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:58:50,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2020-10-26 19:58:50,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/212564e04/ac1a2758d2cf4057bb2a2c9476f1dd8b/FLAGf5e39922c [2020-10-26 19:58:51,472 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:58:51,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skippedu.c [2020-10-26 19:58:51,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/212564e04/ac1a2758d2cf4057bb2a2c9476f1dd8b/FLAGf5e39922c [2020-10-26 19:58:51,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/212564e04/ac1a2758d2cf4057bb2a2c9476f1dd8b [2020-10-26 19:58:51,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:58:51,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:58:51,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:58:51,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:58:51,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:58:51,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:58:51" (1/1) ... [2020-10-26 19:58:51,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b4309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:51, skipping insertion in model container [2020-10-26 19:58:51,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:58:51" (1/1) ... [2020-10-26 19:58:51,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:58:51,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:58:52,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:58:52,024 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:58:52,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:58:52,066 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:58:52,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52 WrapperNode [2020-10-26 19:58:52,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:58:52,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:58:52,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:58:52,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:58:52,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (1/1) ... [2020-10-26 19:58:52,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (1/1) ... [2020-10-26 19:58:52,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (1/1) ... [2020-10-26 19:58:52,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (1/1) ... [2020-10-26 19:58:52,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (1/1) ... [2020-10-26 19:58:52,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (1/1) ... [2020-10-26 19:58:52,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (1/1) ... [2020-10-26 19:58:52,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:58:52,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:58:52,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:58:52,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:58:52,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (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 [2020-10-26 19:58:52,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:58:52,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:58:52,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:58:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:58:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:58:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:58:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:58:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:58:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:58:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:58:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:58:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:58:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:58:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:58:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:58:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:58:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:58:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:58:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:58:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:58:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:58:52,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:58:52,540 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:58:52,540 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:58:52,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:58:52 BoogieIcfgContainer [2020-10-26 19:58:52,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:58:52,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:58:52,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:58:52,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:58:52,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:58:51" (1/3) ... [2020-10-26 19:58:52,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce0a2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:58:52, skipping insertion in model container [2020-10-26 19:58:52,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:58:52" (2/3) ... [2020-10-26 19:58:52,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce0a2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:58:52, skipping insertion in model container [2020-10-26 19:58:52,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:58:52" (3/3) ... [2020-10-26 19:58:52,551 INFO L111 eAbstractionObserver]: Analyzing ICFG skippedu.c [2020-10-26 19:58:52,563 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:58:52,568 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:58:52,585 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:58:52,618 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:58:52,618 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:58:52,618 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:58:52,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:58:52,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:58:52,618 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:58:52,619 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:58:52,619 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:58:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-26 19:58:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:58:52,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:52,673 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] [2020-10-26 19:58:52,673 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1434902792, now seen corresponding path program 1 times [2020-10-26 19:58:52,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:52,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193913380] [2020-10-26 19:58:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:53,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:53,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:53,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:58:53,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:58:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-26 19:58:53,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:58:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:58:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:53,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:53,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:53,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 19:58:53,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:53,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:58:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-26 19:58:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:53,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:53,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:58:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 19:58:53,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 19:58:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:58:53,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193913380] [2020-10-26 19:58:53,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:58:53,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:58:53,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508827817] [2020-10-26 19:58:53,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:58:53,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:53,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:58:53,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:58:53,916 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-10-26 19:58:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:54,110 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2020-10-26 19:58:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:58:54,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-26 19:58:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:54,122 INFO L225 Difference]: With dead ends: 72 [2020-10-26 19:58:54,122 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 19:58:54,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:58:54,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 19:58:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-26 19:58:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 19:58:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-26 19:58:54,168 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2020-10-26 19:58:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:54,169 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-26 19:58:54,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:58:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-26 19:58:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 19:58:54,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:54,170 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, 1] [2020-10-26 19:58:54,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:58:54,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:54,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:54,172 INFO L82 PathProgramCache]: Analyzing trace with hash -714921848, now seen corresponding path program 1 times [2020-10-26 19:58:54,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:54,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679076278] [2020-10-26 19:58:54,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:55,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-26 19:58:55,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:58:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-26 19:58:55,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:58:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-26 19:58:55,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:55,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:55,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:55,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:55,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 19:58:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:55,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:55,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:55,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:55,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:55,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:58:55,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679076278] [2020-10-26 19:58:55,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:55,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 19:58:55,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465522845] [2020-10-26 19:58:55,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:58:55,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:55,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:58:55,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:58:55,109 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-10-26 19:58:55,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:55,240 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-26 19:58:55,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:58:55,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-26 19:58:55,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:55,242 INFO L225 Difference]: With dead ends: 60 [2020-10-26 19:58:55,242 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 19:58:55,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:58:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 19:58:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-26 19:58:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 19:58:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-26 19:58:55,253 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 25 [2020-10-26 19:58:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:55,254 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-26 19:58:55,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:58:55,254 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-26 19:58:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 19:58:55,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:55,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:55,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:58:55,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:55,256 INFO L82 PathProgramCache]: Analyzing trace with hash 193985738, now seen corresponding path program 2 times [2020-10-26 19:58:55,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:55,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072103353] [2020-10-26 19:58:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:55,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 19:58:55,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:58:55,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-26 19:58:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:58:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 19:58:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:55,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:55,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:55,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:55,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 19:58:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:55,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:55,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:55,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:58:55,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:55,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:55,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:58:55,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072103353] [2020-10-26 19:58:55,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:58:55,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:58:55,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454943427] [2020-10-26 19:58:55,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:58:55,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:55,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:58:55,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:58:55,868 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-10-26 19:58:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:56,047 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-10-26 19:58:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:58:56,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-26 19:58:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:56,051 INFO L225 Difference]: With dead ends: 53 [2020-10-26 19:58:56,051 INFO L226 Difference]: Without dead ends: 41 [2020-10-26 19:58:56,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:58:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-26 19:58:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2020-10-26 19:58:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 19:58:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-26 19:58:56,065 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2020-10-26 19:58:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:56,066 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-26 19:58:56,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:58:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-26 19:58:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:58:56,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:56,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-10-26 19:58:56,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:58:56,068 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:56,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1607242461, now seen corresponding path program 1 times [2020-10-26 19:58:56,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:56,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574730131] [2020-10-26 19:58:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:58:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:58:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-26 19:58:56,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:58:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 19:58:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:57,237 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 21 [2020-10-26 19:58:57,390 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-26 19:58:57,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:57,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:57,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:57,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:57,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:57,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:57,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:57,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 19:58:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:57,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:57,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:57,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:58:57,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:58:57,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574730131] [2020-10-26 19:58:57,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:57,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:58:57,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865884149] [2020-10-26 19:58:57,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:58:57,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:57,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:58:57,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:58:57,764 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 15 states. [2020-10-26 19:58:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:59,065 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2020-10-26 19:58:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:58:59,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2020-10-26 19:58:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:59,068 INFO L225 Difference]: With dead ends: 80 [2020-10-26 19:58:59,069 INFO L226 Difference]: Without dead ends: 77 [2020-10-26 19:58:59,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:58:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-26 19:58:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-10-26 19:58:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-26 19:58:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-26 19:58:59,099 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 32 [2020-10-26 19:58:59,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:59,104 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-26 19:58:59,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:58:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-26 19:58:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:58:59,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:59,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-10-26 19:58:59,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:58:59,107 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:59,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1349077023, now seen corresponding path program 1 times [2020-10-26 19:58:59,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:59,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923132568] [2020-10-26 19:58:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 19:58:59,134 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 19:58:59,134 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:58:59,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:58:59,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:58:59 BoogieIcfgContainer [2020-10-26 19:58:59,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:58:59,164 INFO L168 Benchmark]: Toolchain (without parser) took 7362.25 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 126.4 MB in the beginning and 87.6 MB in the end (delta: 38.8 MB). Peak memory consumption was 110.7 MB. Max. memory is 8.0 GB. [2020-10-26 19:58:59,164 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:58:59,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.37 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:58:59,169 INFO L168 Benchmark]: Boogie Preprocessor took 42.25 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 19:58:59,171 INFO L168 Benchmark]: RCFGBuilder took 431.06 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 131.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:58:59,177 INFO L168 Benchmark]: TraceAbstraction took 6616.48 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 131.1 MB in the beginning and 87.6 MB in the end (delta: 43.5 MB). Peak memory consumption was 114.3 MB. Max. memory is 8.0 GB. [2020-10-26 19:58:59,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.37 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.25 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.06 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 131.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6616.48 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 131.1 MB in the beginning and 87.6 MB in the end (delta: 43.5 MB). Peak memory consumption was 114.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int SIZE; [L14] const int MAX = 100000; [L18] SIZE = __VERIFIER_nondet_int() [L19] COND TRUE SIZE > 1 && SIZE < MAX [L21] int i; [L22] int *a = malloc(sizeof(int)*SIZE); [L24] i = 0 [L24] COND TRUE i < SIZE [L26] a[i] = __VERIFIER_nondet_int() [L24] i++ [L24] COND TRUE i < SIZE [L26] a[i] = __VERIFIER_nondet_int() [L24] i++ [L24] COND FALSE !(i < SIZE) [L29] COND FALSE !(SIZE % 2 != 0) [L31] CALL assume_abort_if_not(SIZE % 2 == 0) [L6] COND FALSE !(!cond) [L31] RET assume_abort_if_not(SIZE % 2 == 0) [L32] i = 1 [L32] COND TRUE i <= SIZE/2 [L34] EXPR a[2*i-2] [L34] COND FALSE !(a[2*i-2] > i) [L38] EXPR a[2*i-1] [L38] COND TRUE a[2*i-1] > i [L40] a[2*i-1] = 2*i-1 [L32] i++ [L32] COND FALSE !(i <= SIZE/2) [L44] i = 0 [L44] COND TRUE i < SIZE [L46] EXPR a[i] [L46] CALL __VERIFIER_assert( a[i] <= i ) [L8] COND TRUE !(cond) [L8] CALL reach_error() [L3] __assert_fail("0", "skippedu.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 166 SDslu, 122 SDs, 0 SdLazy, 610 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 28353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...