/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/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:18:57,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:18:57,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:18:57,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:18:57,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:18:57,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:18:57,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:18:57,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:18:57,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:18:57,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:18:57,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:18:57,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:18:57,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:18:57,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:18:57,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:18:57,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:18:57,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:18:57,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:18:57,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:18:57,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:18:57,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:18:57,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:18:57,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:18:57,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:18:57,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:18:57,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:18:57,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:18:57,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:18:57,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:18:57,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:18:57,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:18:57,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:18:57,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:18:57,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:18:57,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:18:57,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:18:57,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:18:57,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:18:57,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:18:57,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:18:57,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:18:57,273 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 10:18:57,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:18:57,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:18:57,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:18:57,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:18:57,327 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:18:57,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:18:57,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:18:57,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:18:57,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:18:57,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:18:57,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:18:57,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:18:57,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:18:57,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:18:57,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:18:57,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:18:57,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:18:57,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:18:57,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:18:57,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:18:57,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:18:57,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:18:57,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:18:57,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:18:57,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:18:57,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:18:57,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:18:57,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:18:57,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:18:57,334 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 10:18:57,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:18:57,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:18:57,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:18:57,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:18:57,839 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:18:57,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-25 10:18:57,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7bc29f7b/a47adad829594cbca1e1d23b4f862d9c/FLAG04e911ce7 [2020-09-25 10:18:58,483 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:18:58,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-25 10:18:58,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7bc29f7b/a47adad829594cbca1e1d23b4f862d9c/FLAG04e911ce7 [2020-09-25 10:18:58,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7bc29f7b/a47adad829594cbca1e1d23b4f862d9c [2020-09-25 10:18:58,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:18:58,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:18:58,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:58,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:18:58,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:18:58,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:58" (1/1) ... [2020-09-25 10:18:58,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d972e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:58, skipping insertion in model container [2020-09-25 10:18:58,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:58" (1/1) ... [2020-09-25 10:18:58,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:18:58,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:18:59,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:59,160 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:18:59,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:59,194 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:18:59,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59 WrapperNode [2020-09-25 10:18:59,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:59,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:18:59,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:18:59,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:18:59,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (1/1) ... [2020-09-25 10:18:59,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (1/1) ... [2020-09-25 10:18:59,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (1/1) ... [2020-09-25 10:18:59,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (1/1) ... [2020-09-25 10:18:59,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (1/1) ... [2020-09-25 10:18:59,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (1/1) ... [2020-09-25 10:18:59,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (1/1) ... [2020-09-25 10:18:59,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:18:59,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:18:59,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:18:59,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:18:59,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (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 10:18:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:18:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:18:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:18:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:18:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:18:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:18:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:18:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:18:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:18:59,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:18:59,699 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 10:18:59,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:59 BoogieIcfgContainer [2020-09-25 10:18:59,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:18:59,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:18:59,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:18:59,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:18:59,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:18:58" (1/3) ... [2020-09-25 10:18:59,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780a2f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:59, skipping insertion in model container [2020-09-25 10:18:59,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:59" (2/3) ... [2020-09-25 10:18:59,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780a2f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:59, skipping insertion in model container [2020-09-25 10:18:59,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:59" (3/3) ... [2020-09-25 10:18:59,716 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-09-25 10:18:59,728 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:18:59,738 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:18:59,759 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:18:59,788 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:18:59,788 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:18:59,788 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:18:59,788 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:18:59,789 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:18:59,789 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:18:59,789 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:18:59,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:18:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-25 10:18:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 10:18:59,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:59,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:59,819 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:59,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1562147583, now seen corresponding path program 1 times [2020-09-25 10:18:59,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:59,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114256960] [2020-09-25 10:18:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:00,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:00,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:19:00,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 10:19:00,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:00,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 10:19:00,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:19:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:00,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:00,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:00,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:19:00,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:00,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:00,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:00,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:00,297 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 10:19:00,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114256960] [2020-09-25 10:19:00,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:19:00,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:19:00,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010914555] [2020-09-25 10:19:00,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:19:00,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:00,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:19:00,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:19:00,331 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-09-25 10:19:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:00,404 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2020-09-25 10:19:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:19:00,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 10:19:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:00,419 INFO L225 Difference]: With dead ends: 105 [2020-09-25 10:19:00,419 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 10:19:00,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:19:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 10:19:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-09-25 10:19:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:19:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-25 10:19:00,475 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2020-09-25 10:19:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:00,476 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-25 10:19:00,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:19:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-25 10:19:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 10:19:00,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:00,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:19:00,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:19:00,479 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:00,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:00,480 INFO L82 PathProgramCache]: Analyzing trace with hash 42061886, now seen corresponding path program 1 times [2020-09-25 10:19:00,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:00,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741258904] [2020-09-25 10:19:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:01,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:01,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:19:01,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:19:01,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-25 10:19:01,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:01,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:19:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:19:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:19:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:01,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:01,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:01,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:19:01,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:01,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:19:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:01,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741258904] [2020-09-25 10:19:01,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:01,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:19:01,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47253213] [2020-09-25 10:19:01,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:19:01,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:01,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:19:01,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:19:01,284 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 7 states. [2020-09-25 10:19:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:01,444 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-09-25 10:19:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:19:01,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 10:19:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:01,447 INFO L225 Difference]: With dead ends: 92 [2020-09-25 10:19:01,447 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 10:19:01,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:19:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 10:19:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 51. [2020-09-25 10:19:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 10:19:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-09-25 10:19:01,461 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 27 [2020-09-25 10:19:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:01,461 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-09-25 10:19:01,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:19:01,462 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-09-25 10:19:01,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 10:19:01,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:01,464 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:19:01,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:19:01,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:01,465 INFO L82 PathProgramCache]: Analyzing trace with hash -2023869189, now seen corresponding path program 2 times [2020-09-25 10:19:01,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:01,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249064592] [2020-09-25 10:19:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:01,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:01,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:19:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:19:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 10:19:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:01,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:19:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:19:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:02,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:02,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:19:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:02,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:02,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249064592] [2020-09-25 10:19:02,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:02,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:19:02,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621868147] [2020-09-25 10:19:02,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:19:02,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:02,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:19:02,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:19:02,099 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 9 states. [2020-09-25 10:19:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:02,307 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-25 10:19:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:19:02,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-09-25 10:19:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:02,310 INFO L225 Difference]: With dead ends: 135 [2020-09-25 10:19:02,310 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 10:19:02,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:19:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 10:19:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 55. [2020-09-25 10:19:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 10:19:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-09-25 10:19:02,325 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 31 [2020-09-25 10:19:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:02,325 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-09-25 10:19:02,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:19:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-09-25 10:19:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 10:19:02,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:02,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 10:19:02,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:19:02,328 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:02,328 INFO L82 PathProgramCache]: Analyzing trace with hash -909118664, now seen corresponding path program 3 times [2020-09-25 10:19:02,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:02,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213999354] [2020-09-25 10:19:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:03,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:03,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:03,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 10:19:03,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:19:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-09-25 10:19:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:03,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:19:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:19:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:03,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:03,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:03,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:19:03,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:03,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:03,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:03,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213999354] [2020-09-25 10:19:03,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:03,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:19:03,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199867413] [2020-09-25 10:19:03,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:19:03,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:03,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:19:03,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:19:03,498 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 11 states. [2020-09-25 10:19:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:03,726 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-09-25 10:19:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:19:03,727 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-09-25 10:19:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:03,728 INFO L225 Difference]: With dead ends: 118 [2020-09-25 10:19:03,728 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 10:19:03,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:19:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 10:19:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-09-25 10:19:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 10:19:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-25 10:19:03,737 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2020-09-25 10:19:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:03,737 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-25 10:19:03,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:19:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-25 10:19:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 10:19:03,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:03,739 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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 10:19:03,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:19:03,740 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash -460436747, now seen corresponding path program 4 times [2020-09-25 10:19:03,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:03,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471939737] [2020-09-25 10:19:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:03,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:04,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:19:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:19:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-09-25 10:19:04,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:04,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:19:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:19:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:05,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:05,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:19:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:05,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:05,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471939737] [2020-09-25 10:19:05,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:05,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:19:05,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914216212] [2020-09-25 10:19:05,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:19:05,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:05,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:19:05,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:19:05,047 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-25 10:19:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:05,331 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-09-25 10:19:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:19:05,332 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-09-25 10:19:05,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:05,334 INFO L225 Difference]: With dead ends: 121 [2020-09-25 10:19:05,336 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 10:19:05,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:19:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 10:19:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2020-09-25 10:19:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 10:19:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-09-25 10:19:05,351 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2020-09-25 10:19:05,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:05,354 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-09-25 10:19:05,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:19:05,354 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-09-25 10:19:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 10:19:05,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:05,357 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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 10:19:05,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:19:05,361 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:05,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1152416818, now seen corresponding path program 5 times [2020-09-25 10:19:05,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:05,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911568788] [2020-09-25 10:19:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:05,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:07,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:07,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:19:07,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:19:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1682 [2020-09-25 10:19:07,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:07,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:19:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:07,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:19:07,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:07,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:07,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:07,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:07,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:19:07,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:07,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:07,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911568788] [2020-09-25 10:19:07,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:07,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:19:07,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476460748] [2020-09-25 10:19:07,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:19:07,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:07,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:19:07,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:19:07,511 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 15 states. [2020-09-25 10:19:07,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:07,978 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-09-25 10:19:07,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:19:07,979 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-09-25 10:19:07,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:07,981 INFO L225 Difference]: With dead ends: 129 [2020-09-25 10:19:07,981 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 10:19:07,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:19:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 10:19:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2020-09-25 10:19:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 10:19:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-25 10:19:07,996 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 43 [2020-09-25 10:19:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:07,997 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-25 10:19:07,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:19:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-25 10:19:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:19:07,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:07,999 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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 10:19:07,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:19:07,999 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2041431791, now seen corresponding path program 6 times [2020-09-25 10:19:08,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:08,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251534342] [2020-09-25 10:19:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:08,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:09,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:09,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:19:09,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:19:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1747 [2020-09-25 10:19:09,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:09,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:19:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:19:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:14,364 WARN L193 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 83 DAG size of output: 13 [2020-09-25 10:19:14,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:14,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:14,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:14,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:19:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:14,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:14,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251534342] [2020-09-25 10:19:14,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:14,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:19:14,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428695373] [2020-09-25 10:19:14,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:19:14,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:14,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:19:14,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:19:14,421 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 17 states. [2020-09-25 10:19:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:15,041 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2020-09-25 10:19:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:19:15,042 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-09-25 10:19:15,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:15,043 INFO L225 Difference]: With dead ends: 112 [2020-09-25 10:19:15,043 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 10:19:15,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:19:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 10:19:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 71. [2020-09-25 10:19:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 10:19:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-09-25 10:19:15,052 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 47 [2020-09-25 10:19:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:15,052 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-09-25 10:19:15,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:19:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-09-25 10:19:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:19:15,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:15,054 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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 10:19:15,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:19:15,054 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:15,055 INFO L82 PathProgramCache]: Analyzing trace with hash 90008364, now seen corresponding path program 7 times [2020-09-25 10:19:15,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:15,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058035906] [2020-09-25 10:19:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:15,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 10:19:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:19:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-09-25 10:19:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:19:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:19:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:19:19,869 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 83 DAG size of output: 13 [2020-09-25 10:19:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:19,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:19,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:19,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:19:19,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:19,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:19,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058035906] [2020-09-25 10:19:19,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:19,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:19:19,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027600256] [2020-09-25 10:19:19,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:19:19,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:19,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:19:19,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:19:19,942 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 19 states. [2020-09-25 10:19:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:20,779 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2020-09-25 10:19:20,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:19:20,781 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-09-25 10:19:20,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:20,783 INFO L225 Difference]: With dead ends: 175 [2020-09-25 10:19:20,783 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 10:19:20,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 10:19:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 10:19:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 75. [2020-09-25 10:19:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 10:19:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 10:19:20,791 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 51 [2020-09-25 10:19:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:20,791 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 10:19:20,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:19:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 10:19:20,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 10:19:20,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:20,793 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 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 10:19:20,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:19:20,793 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:20,794 INFO L82 PathProgramCache]: Analyzing trace with hash 737585385, now seen corresponding path program 8 times [2020-09-25 10:19:20,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:20,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271641931] [2020-09-25 10:19:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:22,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:22,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:19:22,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:19:22,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-09-25 10:19:22,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:22,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:19:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:22,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 10:19:22,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:22,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:22,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:22,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:22,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:19:22,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:22,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:22,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:22,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271641931] [2020-09-25 10:19:22,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:22,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:19:22,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804922554] [2020-09-25 10:19:22,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:19:22,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:22,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:19:22,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:19:22,815 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 19 states. [2020-09-25 10:19:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:23,677 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2020-09-25 10:19:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:19:23,678 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-09-25 10:19:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:23,679 INFO L225 Difference]: With dead ends: 158 [2020-09-25 10:19:23,679 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 10:19:23,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 10:19:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 10:19:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-09-25 10:19:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 10:19:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-25 10:19:23,699 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 55 [2020-09-25 10:19:23,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:23,700 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-25 10:19:23,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:19:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-25 10:19:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 10:19:23,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:23,701 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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 10:19:23,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:19:23,702 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:23,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:23,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1005535194, now seen corresponding path program 9 times [2020-09-25 10:19:23,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:23,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286541418] [2020-09-25 10:19:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:26,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:26,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:19:26,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:19:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2548 [2020-09-25 10:19:26,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:26,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:19:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:19:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:26,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:26,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:26,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:26,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:19:26,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:26,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:26,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286541418] [2020-09-25 10:19:26,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:26,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 10:19:26,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842145888] [2020-09-25 10:19:26,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 10:19:26,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:26,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 10:19:26,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:19:26,763 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 23 states. [2020-09-25 10:19:27,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:27,968 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2020-09-25 10:19:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 10:19:27,969 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 59 [2020-09-25 10:19:27,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:27,970 INFO L225 Difference]: With dead ends: 124 [2020-09-25 10:19:27,970 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 10:19:27,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 10:19:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 10:19:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 83. [2020-09-25 10:19:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 10:19:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-09-25 10:19:27,977 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 59 [2020-09-25 10:19:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:27,978 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-09-25 10:19:27,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 10:19:27,978 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-09-25 10:19:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 10:19:27,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:27,980 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 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 10:19:27,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:19:27,980 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:27,980 INFO L82 PathProgramCache]: Analyzing trace with hash 111341795, now seen corresponding path program 10 times [2020-09-25 10:19:27,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:27,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722785925] [2020-09-25 10:19:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 10:19:30,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:19:30,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2570 [2020-09-25 10:19:30,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 10:19:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 10:19:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 10:19:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:31,526 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 16 [2020-09-25 10:19:31,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:31,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:31,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:19:31,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:19:31,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:31,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:31,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:31,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:31,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:31,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:19:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:19:31,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722785925] [2020-09-25 10:19:31,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:31,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 10:19:31,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860716014] [2020-09-25 10:19:31,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 10:19:31,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:31,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 10:19:31,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:19:31,659 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 25 states. [2020-09-25 10:19:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:33,185 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2020-09-25 10:19:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 10:19:33,187 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2020-09-25 10:19:33,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:33,188 INFO L225 Difference]: With dead ends: 166 [2020-09-25 10:19:33,188 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:19:33,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 10:19:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:19:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:19:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:19:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:19:33,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-25 10:19:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:33,192 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:19:33,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 10:19:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:19:33,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:19:33,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:19:33,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:19:33,615 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 29 [2020-09-25 10:19:33,619 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:19:33,619 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:19:33,619 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:19:33,619 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:19:33,620 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:19:33,620 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:19:33,621 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-09-25 10:19:33,621 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 10:19:33,621 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-09-25 10:19:33,621 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:19:33,621 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 10:19:33,621 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 10:19:33,622 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 10:19:33,622 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 10:19:33,622 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 10:19:33,622 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:19:33,622 INFO L268 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-09-25 10:19:33,622 INFO L264 CegarLoopResult]: At program point L20-5(lines 20 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 10:19:33,622 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 10:19:33,623 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 10:19:33,623 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 10:19:33,623 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-25 10:19:33,623 INFO L268 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-09-25 10:19:33,624 INFO L264 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: (or (and (<= main_~v~0 9) (<= 9 main_~v~0)) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= main_~v~0 8) (< 0 (+ (div main_~v~0 4294967296) 1)))) [2020-09-25 10:19:33,625 INFO L264 CegarLoopResult]: At program point L21-7(line 21) the Hoare annotation is: (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) [2020-09-25 10:19:33,625 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2020-09-25 10:19:33,625 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 10:19:33,625 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 10:19:33,625 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-09-25 10:19:33,625 INFO L268 CegarLoopResult]: For program point L17-5(line 17) no Hoare annotation was computed. [2020-09-25 10:19:33,626 INFO L264 CegarLoopResult]: At program point L17-6(lines 17 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 10:19:33,626 INFO L268 CegarLoopResult]: For program point L17-7(lines 17 23) no Hoare annotation was computed. [2020-09-25 10:19:33,626 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-09-25 10:19:33,626 INFO L268 CegarLoopResult]: For program point L22(lines 20 23) no Hoare annotation was computed. [2020-09-25 10:19:33,626 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 10:19:33,626 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 23) no Hoare annotation was computed. [2020-09-25 10:19:33,626 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 10:19:33,626 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 10:19:33,627 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-25 10:19:33,627 INFO L264 CegarLoopResult]: At program point L18-6(lines 18 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 10:19:33,627 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 10:19:33,627 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 10:19:33,627 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 10:19:33,627 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:19:33,627 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 10:19:33,628 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 10:19:33,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:19:33 BoogieIcfgContainer [2020-09-25 10:19:33,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:19:33,656 INFO L168 Benchmark]: Toolchain (without parser) took 34806.68 ms. Allocated memory was 140.0 MB in the beginning and 396.9 MB in the end (delta: 256.9 MB). Free memory was 103.5 MB in the beginning and 203.4 MB in the end (delta: -99.8 MB). Peak memory consumption was 157.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:33,657 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 10:19:33,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.35 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:33,659 INFO L168 Benchmark]: Boogie Preprocessor took 122.85 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 181.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:33,660 INFO L168 Benchmark]: RCFGBuilder took 384.88 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:33,661 INFO L168 Benchmark]: TraceAbstraction took 33948.90 ms. Allocated memory was 202.9 MB in the beginning and 396.9 MB in the end (delta: 194.0 MB). Free memory was 166.1 MB in the beginning and 203.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 156.7 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:33,665 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 338.35 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.85 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 181.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.88 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33948.90 ms. Allocated memory was 202.9 MB in the beginning and 396.9 MB in the end (delta: 194.0 MB). Free memory was 166.1 MB in the beginning and 203.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 156.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 17]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((v <= 9 && 9 <= v) || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v)) || (v <= 8 && 0 < v / 4294967296 + 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 33.4s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 615 SDtfs, 517 SDslu, 6884 SDs, 0 SdLazy, 3527 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 290 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 24 PreInvPairs, 44 NumberOfFragments, 166 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 186 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 26.1s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 105550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 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...