/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:17:11,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:17:11,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:17:11,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:17:11,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:17:11,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:17:11,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:17:11,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:17:11,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:17:11,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:17:11,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:17:11,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:17:11,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:17:11,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:17:11,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:17:11,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:17:11,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:17:11,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:17:11,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:17:11,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:17:11,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:17:11,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:17:11,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:17:11,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:17:11,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:17:11,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:17:11,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:17:11,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:17:11,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:17:11,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:17:11,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:17:11,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:17:11,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:17:11,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:17:11,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:17:11,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:17:11,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:17:11,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:17:11,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:17:11,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:17:11,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:17:11,216 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 10:17:11,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:17:11,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:17:11,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:17:11,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:17:11,243 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:17:11,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:17:11,243 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:17:11,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:17:11,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:17:11,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:17:11,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:17:11,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:17:11,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:17:11,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:17:11,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:17:11,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:17:11,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:17:11,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:17:11,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:17:11,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:17:11,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:17:11,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:17:11,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:17:11,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:17:11,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:17:11,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:17:11,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:17:11,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:17:11,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:17:11,248 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:17:11,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:17:11,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:17:11,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:17:11,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:17:11,749 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:17:11,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-09-25 10:17:11,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4928f7697/6ab24bb5454e401d87401728af0cb81d/FLAGa9de6bb04 [2020-09-25 10:17:12,419 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:17:12,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-09-25 10:17:12,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4928f7697/6ab24bb5454e401d87401728af0cb81d/FLAGa9de6bb04 [2020-09-25 10:17:12,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4928f7697/6ab24bb5454e401d87401728af0cb81d [2020-09-25 10:17:12,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:17:12,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:17:12,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:12,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:17:12,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:17:12,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:12" (1/1) ... [2020-09-25 10:17:12,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:12, skipping insertion in model container [2020-09-25 10:17:12,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:12" (1/1) ... [2020-09-25 10:17:12,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:17:12,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:17:13,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:13,063 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:17:13,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:13,112 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:17:13,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13 WrapperNode [2020-09-25 10:17:13,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:13,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:17:13,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:17:13,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:17:13,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (1/1) ... [2020-09-25 10:17:13,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (1/1) ... [2020-09-25 10:17:13,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (1/1) ... [2020-09-25 10:17:13,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (1/1) ... [2020-09-25 10:17:13,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (1/1) ... [2020-09-25 10:17:13,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (1/1) ... [2020-09-25 10:17:13,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (1/1) ... [2020-09-25 10:17:13,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:17:13,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:17:13,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:17:13,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:17:13,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (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 10:17:13,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:17:13,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:17:13,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:17:13,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:17:13,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:17:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:17:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:17:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:17:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:17:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:17:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:17:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:17:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:17:13,623 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:17:13,624 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:17:13,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:13 BoogieIcfgContainer [2020-09-25 10:17:13,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:17:13,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:17:13,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:17:13,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:17:13,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:17:12" (1/3) ... [2020-09-25 10:17:13,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305f75c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:13, skipping insertion in model container [2020-09-25 10:17:13,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:13" (2/3) ... [2020-09-25 10:17:13,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305f75c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:13, skipping insertion in model container [2020-09-25 10:17:13,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:13" (3/3) ... [2020-09-25 10:17:13,640 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-09-25 10:17:13,653 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:17:13,664 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:17:13,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:17:13,753 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:17:13,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:17:13,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:17:13,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:17:13,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:17:13,754 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:17:13,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:17:13,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:17:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-09-25 10:17:13,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 10:17:13,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:13,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:13,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:13,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2007421113, now seen corresponding path program 1 times [2020-09-25 10:17:13,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:13,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705750389] [2020-09-25 10:17:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:14,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:14,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:17:14,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:14,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-25 10:17:14,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:14,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:17:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:17:14,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:17:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:14,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:14,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:14,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:14,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:14,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:14,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:14,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:14,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:14,474 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 10:17:14,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705750389] [2020-09-25 10:17:14,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:14,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:17:14,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398359117] [2020-09-25 10:17:14,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:17:14,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:17:14,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:17:14,511 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2020-09-25 10:17:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:14,738 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2020-09-25 10:17:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:17:14,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 10:17:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:14,754 INFO L225 Difference]: With dead ends: 68 [2020-09-25 10:17:14,755 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 10:17:14,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 10:17:14,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-09-25 10:17:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 10:17:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-09-25 10:17:14,816 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 24 [2020-09-25 10:17:14,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:14,817 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-09-25 10:17:14,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:17:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-09-25 10:17:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 10:17:14,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:14,818 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:17:14,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:17:14,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:14,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:14,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1994781074, now seen corresponding path program 1 times [2020-09-25 10:17:14,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:14,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656664017] [2020-09-25 10:17:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:15,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:15,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:17:15,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:15,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-09-25 10:17:15,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:15,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:17:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:17:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:17:15,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:15,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:15,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:15,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:15,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 10:17:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:15,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:15,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:15,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:17:15,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:15,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 10:17:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:17:15,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656664017] [2020-09-25 10:17:15,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:15,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:15,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340326696] [2020-09-25 10:17:15,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:15,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:15,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:15,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:15,657 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 8 states. [2020-09-25 10:17:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:15,860 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 10:17:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:15,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-09-25 10:17:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:15,862 INFO L225 Difference]: With dead ends: 46 [2020-09-25 10:17:15,863 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 10:17:15,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:17:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 10:17:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 10:17:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:17:15,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 10:17:15,884 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 29 [2020-09-25 10:17:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:15,885 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 10:17:15,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 10:17:15,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 10:17:15,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:15,887 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-09-25 10:17:15,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:17:15,887 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1065397402, now seen corresponding path program 1 times [2020-09-25 10:17:15,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:15,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387581991] [2020-09-25 10:17:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:15,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:16,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:16,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:17:16,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:16,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-09-25 10:17:16,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:16,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:16,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:17:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:17:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:16,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:16,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:16,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:16,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:16,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:16,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:16,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:16,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 10:17:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:16,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:16,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:16,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:16,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:16,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:16,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:16,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:16,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:17:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:16,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:16,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:16,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:16,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:17:16,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:16,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 10:17:16,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387581991] [2020-09-25 10:17:16,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:16,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:17:16,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945709077] [2020-09-25 10:17:16,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:17:16,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:16,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:17:16,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:17:16,778 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 9 states. [2020-09-25 10:17:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:16,988 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 10:17:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:16,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-25 10:17:16,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:16,994 INFO L225 Difference]: With dead ends: 46 [2020-09-25 10:17:16,995 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 10:17:16,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:17:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 10:17:17,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-25 10:17:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 10:17:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-09-25 10:17:17,018 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 38 [2020-09-25 10:17:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:17,018 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-09-25 10:17:17,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:17:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-09-25 10:17:17,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 10:17:17,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:17,023 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 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] [2020-09-25 10:17:17,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:17:17,023 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:17,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:17,025 INFO L82 PathProgramCache]: Analyzing trace with hash 470853039, now seen corresponding path program 2 times [2020-09-25 10:17:17,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:17,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668640069] [2020-09-25 10:17:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 10:17:17,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-09-25 10:17:17,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:17:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:17:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:17:17,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:17,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:17,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 10:17:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:17,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:17,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:17,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:17,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:17,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:17,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:17:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:17,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:17:17,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:17:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:17,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:17,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:17:17,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 10:17:17,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668640069] [2020-09-25 10:17:17,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:17,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:17:17,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048103886] [2020-09-25 10:17:17,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:17,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:17,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:17,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:17,825 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 8 states. [2020-09-25 10:17:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:17,953 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-25 10:17:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:17:17,954 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-25 10:17:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:17,955 INFO L225 Difference]: With dead ends: 46 [2020-09-25 10:17:17,955 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:17:17,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:17:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:17:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:17:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:17:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:17:17,957 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-09-25 10:17:17,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:17,957 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:17:17,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:17:17,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:17:17,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:17:17,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:17:18,178 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:17:18,178 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:17:18,178 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:17:18,179 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:17:18,179 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:17:18,179 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:17:18,179 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:17:18,179 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:17:18,179 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 10:17:18,179 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 10:17:18,180 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:17:18,180 INFO L271 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-09-25 10:17:18,180 INFO L268 CegarLoopResult]: For program point L31(lines 27 32) no Hoare annotation was computed. [2020-09-25 10:17:18,180 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 10:17:18,180 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-25 10:17:18,180 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 10:17:18,180 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 10:17:18,181 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 34) no Hoare annotation was computed. [2020-09-25 10:17:18,181 INFO L264 CegarLoopResult]: At program point L27-3(lines 27 32) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-09-25 10:17:18,181 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 10:17:18,181 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 10:17:18,181 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 10:17:18,181 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 10:17:18,182 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 10:17:18,182 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 34) no Hoare annotation was computed. [2020-09-25 10:17:18,182 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-09-25 10:17:18,182 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 34) the Hoare annotation is: true [2020-09-25 10:17:18,182 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-09-25 10:17:18,183 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 10:17:18,183 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 10:17:18,183 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 10:17:18,183 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 10:17:18,183 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 10:17:18,183 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 10:17:18,183 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:17:18,184 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 10:17:18,184 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 10:17:18,184 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:17:18,184 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 10:17:18,184 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 10:17:18,184 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 10:17:18,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:17:18 BoogieIcfgContainer [2020-09-25 10:17:18,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:17:18,211 INFO L168 Benchmark]: Toolchain (without parser) took 5430.52 ms. Allocated memory was 140.0 MB in the beginning and 245.9 MB in the end (delta: 105.9 MB). Free memory was 103.6 MB in the beginning and 103.3 MB in the end (delta: 241.2 kB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:18,212 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:17:18,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.09 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:18,214 INFO L168 Benchmark]: Boogie Preprocessor took 130.79 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.5 MB in the beginning and 182.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:18,215 INFO L168 Benchmark]: RCFGBuilder took 383.06 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 168.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:18,216 INFO L168 Benchmark]: TraceAbstraction took 4577.24 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 167.8 MB in the beginning and 103.3 MB in the end (delta: 64.5 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:18,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.09 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.79 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.5 MB in the beginning and 182.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.06 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 168.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4577.24 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 167.8 MB in the beginning and 103.3 MB in the end (delta: 64.5 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((1 <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) && pathbuf_off == 0) && glob2_pathbuf_off == 0) && bound_off <= MAXPATHLEN - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 113 SDslu, 479 SDs, 0 SdLazy, 209 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 69 HoareAnnotationTreeSize, 14 FomulaSimplifications, 144 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 9230 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 27/33 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 correct! Received shutdown request...