/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:35:12,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:35:12,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:35:12,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:35:12,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:35:12,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:35:12,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:35:12,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:35:12,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:35:12,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:35:12,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:35:12,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:35:12,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:35:12,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:35:12,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:35:12,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:35:12,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:35:12,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:35:12,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:35:12,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:35:12,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:35:12,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:35:12,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:35:12,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:35:12,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:35:12,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:35:12,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:35:12,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:35:12,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:35:12,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:35:12,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:35:12,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:35:12,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:35:12,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:35:12,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:35:12,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:35:12,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:35:12,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:35:12,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:35:12,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:35:12,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:35:12,334 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 [2020-09-25 04:35:12,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:35:12,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:35:12,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:35:12,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:35:12,362 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:35:12,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:35:12,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:35:12,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:35:12,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:35:12,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:35:12,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:35:12,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:35:12,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:35:12,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:35:12,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:35:12,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:35:12,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:35:12,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:35:12,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:35:12,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:35:12,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:35:12,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:35:12,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:35:12,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:35:12,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:35:12,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:35:12,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:35:12,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:35:12,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:35:12,371 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.rcfgbuilder: Size of a code block -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:35:12,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:35:12,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:35:12,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:35:12,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:35:12,894 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:35:12,895 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-09-25 04:35:12,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5d1a3fdd/beb8b47c921c449281e3d52f0fe5ac7c/FLAG8558ab6cf [2020-09-25 04:35:13,499 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:35:13,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-09-25 04:35:13,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5d1a3fdd/beb8b47c921c449281e3d52f0fe5ac7c/FLAG8558ab6cf [2020-09-25 04:35:13,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5d1a3fdd/beb8b47c921c449281e3d52f0fe5ac7c [2020-09-25 04:35:13,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:35:13,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:35:13,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:35:13,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:35:13,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:35:13,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:35:13" (1/1) ... [2020-09-25 04:35:13,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:13, skipping insertion in model container [2020-09-25 04:35:13,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:35:13" (1/1) ... [2020-09-25 04:35:13,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:35:13,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:35:14,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:35:14,146 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:35:14,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:35:14,191 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:35:14,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14 WrapperNode [2020-09-25 04:35:14,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:35:14,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:35:14,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:35:14,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:35:14,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (1/1) ... [2020-09-25 04:35:14,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (1/1) ... [2020-09-25 04:35:14,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (1/1) ... [2020-09-25 04:35:14,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (1/1) ... [2020-09-25 04:35:14,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (1/1) ... [2020-09-25 04:35:14,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (1/1) ... [2020-09-25 04:35:14,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (1/1) ... [2020-09-25 04:35:14,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:35:14,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:35:14,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:35:14,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:35:14,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (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 [2020-09-25 04:35:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:35:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:35:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 04:35:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 04:35:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:35:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:35:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:35:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 04:35:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 04:35:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:35:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:35:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:35:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:35:14,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:35:14,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:35:14,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:35:14 BoogieIcfgContainer [2020-09-25 04:35:14,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:35:14,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:35:14,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:35:14,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:35:14,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:35:13" (1/3) ... [2020-09-25 04:35:14,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22afe02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:35:14, skipping insertion in model container [2020-09-25 04:35:14,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:14" (2/3) ... [2020-09-25 04:35:14,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22afe02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:35:14, skipping insertion in model container [2020-09-25 04:35:14,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:35:14" (3/3) ... [2020-09-25 04:35:14,697 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2020-09-25 04:35:14,728 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:35:14,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:35:14,785 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:35:14,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:35:14,825 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:35:14,825 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:35:14,825 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:35:14,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:35:14,826 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:35:14,826 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:35:14,826 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:35:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-25 04:35:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 04:35:14,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:14,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:14,853 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash 31250732, now seen corresponding path program 1 times [2020-09-25 04:35:14,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:14,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998683872] [2020-09-25 04:35:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:15,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:15,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:35:15,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:35:15,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:15,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:35:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:35:15,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:15,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:15,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:15,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:35:15,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:35:15,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:15,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:35:15,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998683872] [2020-09-25 04:35:15,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:15,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 04:35:15,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898227069] [2020-09-25 04:35:15,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 04:35:15,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:15,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 04:35:15,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 04:35:15,128 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-09-25 04:35:15,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:15,152 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-09-25 04:35:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 04:35:15,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-09-25 04:35:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:15,163 INFO L225 Difference]: With dead ends: 37 [2020-09-25 04:35:15,164 INFO L226 Difference]: Without dead ends: 19 [2020-09-25 04:35:15,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 04:35:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-25 04:35:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-25 04:35:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-25 04:35:15,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-09-25 04:35:15,214 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2020-09-25 04:35:15,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:15,215 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-09-25 04:35:15,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 04:35:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-09-25 04:35:15,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 04:35:15,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:15,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:15,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:35:15,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:15,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:15,218 INFO L82 PathProgramCache]: Analyzing trace with hash 18321438, now seen corresponding path program 1 times [2020-09-25 04:35:15,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:15,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419879680] [2020-09-25 04:35:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:35:15,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 04:35:15,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:15,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:35:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:35:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:15,695 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2020-09-25 04:35:15,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:15,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:15,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:15,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:35:15,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:35:15,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:15,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:35:15,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419879680] [2020-09-25 04:35:15,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:15,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:35:15,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860977990] [2020-09-25 04:35:15,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:35:15,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:15,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:35:15,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:35:15,754 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 7 states. [2020-09-25 04:35:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:16,296 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-09-25 04:35:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:35:16,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-25 04:35:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:16,298 INFO L225 Difference]: With dead ends: 29 [2020-09-25 04:35:16,298 INFO L226 Difference]: Without dead ends: 24 [2020-09-25 04:35:16,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:35:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-25 04:35:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-09-25 04:35:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 04:35:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-09-25 04:35:16,308 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2020-09-25 04:35:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:16,309 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-09-25 04:35:16,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:35:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-09-25 04:35:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 04:35:16,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:16,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:16,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:35:16,312 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1887897215, now seen corresponding path program 1 times [2020-09-25 04:35:16,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:16,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937278304] [2020-09-25 04:35:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:16,327 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-25 04:35:16,327 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-25 04:35:16,327 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:35:16,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:35:16,348 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 04:35:16,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:35:16 BoogieIcfgContainer [2020-09-25 04:35:16,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:35:16,351 INFO L168 Benchmark]: Toolchain (without parser) took 2484.25 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 102.1 MB in the end (delta: 521.2 kB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-09-25 04:35:16,352 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:35:16,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.90 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 92.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:35:16,355 INFO L168 Benchmark]: Boogie Preprocessor took 129.21 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 181.3 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:35:16,356 INFO L168 Benchmark]: RCFGBuilder took 348.46 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 166.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:35:16,357 INFO L168 Benchmark]: TraceAbstraction took 1674.06 ms. Allocated memory is still 201.3 MB. Free memory was 166.8 MB in the beginning and 102.1 MB in the end (delta: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2020-09-25 04:35:16,361 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.90 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 92.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.21 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 181.3 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.46 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 166.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1674.06 ms. Allocated memory is still 201.3 MB. Free memory was 166.8 MB in the beginning and 102.1 MB in the end (delta: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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: [L16] unsigned int x = 1; [L17] unsigned int y = __VERIFIER_nondet_uint(); [L19] COND FALSE !(!(y > 0)) [L21] COND TRUE x < y [L22] COND FALSE !(x < y / x) [L25] x++ [L21] COND FALSE !(x < y) [L29] CALL __VERIFIER_assert(x == y) [L9] COND TRUE !(cond) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 12 SDslu, 41 SDs, 0 SdLazy, 47 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...