/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:10:32,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:10:32,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:10:32,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:10:32,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:10:32,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:10:32,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:10:32,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:10:32,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:10:32,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:10:32,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:10:32,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:10:32,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:10:32,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:10:32,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:10:32,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:10:32,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:10:32,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:10:32,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:10:32,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:10:32,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:10:32,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:10:32,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:10:32,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:10:32,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:10:32,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:10:32,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:10:32,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:10:32,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:10:32,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:10:32,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:10:32,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:10:32,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:10:32,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:10:32,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:10:32,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:10:32,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:10:32,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:10:32,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:10:32,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:10:32,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:10:32,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 11:10:32,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:10:32,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:10:32,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:10:32,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:10:32,476 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:10:32,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:10:32,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:10:32,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:10:32,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:10:32,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:10:32,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:10:32,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:10:32,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:10:32,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:10:32,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:10:32,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:10:32,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:10:32,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:10:32,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:10:32,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:10:32,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:10:32,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:10:32,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:10:32,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:10:32,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:10:32,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:10:32,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:10:32,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:10:32,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:10:32,481 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 11:10:32,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:10:32,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:10:32,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:10:32,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:10:32,772 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:10:32,772 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2020-10-13 11:10:32,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e542f0774/901127f48ce545ffa79db5889758fbc9/FLAGe8f1543c4 [2020-10-13 11:10:33,317 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:10:33,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-1.i [2020-10-13 11:10:33,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e542f0774/901127f48ce545ffa79db5889758fbc9/FLAGe8f1543c4 [2020-10-13 11:10:33,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e542f0774/901127f48ce545ffa79db5889758fbc9 [2020-10-13 11:10:33,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:10:33,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:10:33,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:10:33,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:10:33,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:10:33,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:33" (1/1) ... [2020-10-13 11:10:33,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5c20e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:33, skipping insertion in model container [2020-10-13 11:10:33,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:33" (1/1) ... [2020-10-13 11:10:33,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:10:33,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:10:34,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:10:34,027 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:10:34,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:10:34,059 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:10:34,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34 WrapperNode [2020-10-13 11:10:34,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:10:34,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:10:34,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:10:34,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:10:34,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (1/1) ... [2020-10-13 11:10:34,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (1/1) ... [2020-10-13 11:10:34,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (1/1) ... [2020-10-13 11:10:34,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (1/1) ... [2020-10-13 11:10:34,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (1/1) ... [2020-10-13 11:10:34,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (1/1) ... [2020-10-13 11:10:34,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (1/1) ... [2020-10-13 11:10:34,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:10:34,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:10:34,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:10:34,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:10:34,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:10:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:10:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:10:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 11:10:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:10:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:10:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 11:10:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 11:10:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:10:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:10:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:10:34,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:10:34,423 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 11:10:34,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:34 BoogieIcfgContainer [2020-10-13 11:10:34,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:10:34,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:10:34,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:10:34,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:10:34,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:10:33" (1/3) ... [2020-10-13 11:10:34,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae0337c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:34, skipping insertion in model container [2020-10-13 11:10:34,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:34" (2/3) ... [2020-10-13 11:10:34,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae0337c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:34, skipping insertion in model container [2020-10-13 11:10:34,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:34" (3/3) ... [2020-10-13 11:10:34,436 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2020-10-13 11:10:34,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:10:34,454 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:10:34,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:10:34,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:10:34,493 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:10:34,493 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:10:34,493 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:10:34,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:10:34,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:10:34,494 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:10:34,494 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:10:34,510 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-13 11:10:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 11:10:34,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:10:34,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:10:34,519 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:10:34,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:10:34,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1345568573, now seen corresponding path program 1 times [2020-10-13 11:10:34,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:10:34,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166264205] [2020-10-13 11:10:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:10:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:34,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:34,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 11:10:34,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 11:10:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:10:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:10:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:10:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 11:10:35,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:10:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:35,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:35,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:10:35,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:35,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:10:35,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:10:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:10:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:10:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:10:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:10:35,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166264205] [2020-10-13 11:10:35,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:10:35,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 11:10:35,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456144066] [2020-10-13 11:10:35,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:10:35,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:10:35,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:10:35,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:10:35,310 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 7 states. [2020-10-13 11:10:37,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:10:37,529 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-10-13 11:10:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:10:37,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-13 11:10:37,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:10:37,540 INFO L225 Difference]: With dead ends: 38 [2020-10-13 11:10:37,540 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 11:10:37,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:10:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 11:10:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-13 11:10:37,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 11:10:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-13 11:10:37,579 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2020-10-13 11:10:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:10:37,579 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-13 11:10:37,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:10:37,580 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-13 11:10:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 11:10:37,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:10:37,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:10:37,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:10:37,581 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:10:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:10:37,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1402826875, now seen corresponding path program 1 times [2020-10-13 11:10:37,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:10:37,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699389413] [2020-10-13 11:10:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:10:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:37,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:37,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 11:10:37,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:10:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 11:10:37,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:10:37,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:10:37,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:10:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:10:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:10:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:37,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:37,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:10:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:10:37,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:10:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:10:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:10:37,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:10:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:10:37,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699389413] [2020-10-13 11:10:37,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:10:37,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 11:10:37,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598943773] [2020-10-13 11:10:37,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 11:10:37,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:10:37,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 11:10:37,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 11:10:37,721 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-10-13 11:10:37,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:10:37,737 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-13 11:10:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 11:10:37,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-13 11:10:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:10:37,739 INFO L225 Difference]: With dead ends: 36 [2020-10-13 11:10:37,740 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 11:10:37,741 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 [2020-10-13 11:10:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 11:10:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-13 11:10:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 11:10:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-13 11:10:37,749 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2020-10-13 11:10:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:10:37,749 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-13 11:10:37,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 11:10:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-13 11:10:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 11:10:37,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:10:37,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:10:37,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 11:10:37,751 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:10:37,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:10:37,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1436486517, now seen corresponding path program 1 times [2020-10-13 11:10:37,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:10:37,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753256190] [2020-10-13 11:10:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:10:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:37,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 11:10:37,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 11:10:37,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:10:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:10:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:10:37,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:10:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:10:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:37,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:37,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:10:37,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:10:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:10:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:10:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:10:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:10:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:10:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:38,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:38,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:10:38,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 11:10:38,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:10:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:10:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:10:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:10:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:10:38,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753256190] [2020-10-13 11:10:38,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:10:38,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 11:10:38,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833678026] [2020-10-13 11:10:38,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 11:10:38,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:10:38,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 11:10:38,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-13 11:10:38,022 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 4 states. [2020-10-13 11:10:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:10:38,052 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-13 11:10:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 11:10:38,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-13 11:10:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:10:38,055 INFO L225 Difference]: With dead ends: 40 [2020-10-13 11:10:38,055 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 11:10:38,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-13 11:10:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 11:10:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 11:10:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 11:10:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-13 11:10:38,070 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2020-10-13 11:10:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:10:38,070 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-13 11:10:38,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 11:10:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-13 11:10:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 11:10:38,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:10:38,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:10:38,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 11:10:38,073 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:10:38,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:10:38,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1136980881, now seen corresponding path program 2 times [2020-10-13 11:10:38,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:10:38,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640259837] [2020-10-13 11:10:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:10:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:38,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:38,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:38,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:38,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 11:10:38,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:10:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-13 11:10:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:10:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:10:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 11:10:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:10:41,127 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div (* c_main_~x~0 2) 4294967296))) (<= (let ((.cse1 (div c_main_~x~0 4294967296))) (+ c_main_~x~0 (* 4294967296 (div (+ (* c_main_~x~0 (- 1)) (* .cse0 4294967296) (* .cse1 (- 4294967296)) 4294967296) 4294967296)) (* 4294967296 .cse1))) (+ (* 4294967296 .cse0) 1))) is different from false [2020-10-13 11:10:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:10:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:41,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:41,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:10:41,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:10:41,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:10:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:10:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:10:41,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:10:41,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:10:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:41,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:41,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:41,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:10:41,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:41,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 11:10:41,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:41,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:10:41,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:10:41,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:10:41,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:10:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 11:10:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:41,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:10:41,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:10:41,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:10:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:10:41,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:10:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:10:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:10:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:10:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:10:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2020-10-13 11:10:41,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640259837] [2020-10-13 11:10:41,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:10:41,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 11:10:41,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173035150] [2020-10-13 11:10:41,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:10:41,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:10:41,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:10:41,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2020-10-13 11:10:41,274 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states. [2020-10-13 11:10:56,105 WARN L193 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-13 11:10:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:10:56,212 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-13 11:10:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:10:56,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-13 11:10:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:10:56,215 INFO L225 Difference]: With dead ends: 44 [2020-10-13 11:10:56,215 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 11:10:56,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=35, Invalid=122, Unknown=3, NotChecked=22, Total=182 [2020-10-13 11:10:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 11:10:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 11:10:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 11:10:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 11:10:56,232 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 28 [2020-10-13 11:10:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:10:56,232 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 11:10:56,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:10:56,232 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 11:10:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 11:10:56,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:10:56,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:10:56,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 11:10:56,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:10:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:10:56,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1851034775, now seen corresponding path program 3 times [2020-10-13 11:10:56,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:10:56,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844345563] [2020-10-13 11:10:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:10:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:10:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:56,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:56,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:10:57,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:01,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:01,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 11:11:01,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 11:11:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 11:11:01,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:11:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:11:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 11:11:01,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:01,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:01,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:01,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:11:01,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:01,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:11:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:01,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:01,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:01,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:01,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:11:01,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:11:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:11:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 11:11:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:01,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:01,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:01,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:11:01,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:11:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:11:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:01,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 11:11:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:01,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:01,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:01,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:01,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:11:01,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:11:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:11:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:11:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 11:11:01,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844345563] [2020-10-13 11:11:01,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:11:01,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 11:11:01,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341128554] [2020-10-13 11:11:01,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:11:01,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:01,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:11:01,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:11:01,705 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 10 states. [2020-10-13 11:11:10,277 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-10-13 11:11:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:10,323 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-13 11:11:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:11:10,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-13 11:11:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:10,325 INFO L225 Difference]: With dead ends: 48 [2020-10-13 11:11:10,325 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 11:11:10,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:11:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 11:11:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 11:11:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 11:11:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-13 11:11:10,334 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 36 [2020-10-13 11:11:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:10,335 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-13 11:11:10,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:11:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-13 11:11:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 11:11:10,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:10,337 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:11:10,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 11:11:10,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:10,337 INFO L82 PathProgramCache]: Analyzing trace with hash 103432291, now seen corresponding path program 4 times [2020-10-13 11:11:10,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:10,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510823288] [2020-10-13 11:11:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:15,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:15,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 11:11:15,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 11:11:15,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 11:11:15,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 11:11:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:11:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 11:11:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:17,679 WARN L860 $PredicateComparison]: unable to prove that (and (or (<= 6 c_main_~sn~0) (<= (+ c_main_~sn~0 4294967290) 0) (<= 4 c_main_~sn~0)) (let ((.cse1 (* c_main_~sn~0 (- 1))) (.cse0 (* 2 c_main_~x~0)) (.cse3 (div c_main_~sn~0 4294967296)) (.cse2 (div (* c_main_~x~0 2) 4294967296))) (or (<= (+ .cse0 (* 8589934592 (div (+ (* c_main_~x~0 (- 1)) 4294967296) 4294967296))) (+ c_main_~sn~0 (* 4294967296 (div (+ .cse1 6) 4294967296)) 14)) (<= 1 (+ c_main_~x~0 (* 4294967296 (div (+ .cse1 (* .cse2 (- 4294967296)) (* .cse3 4294967296) 4) 8589934592)))) (<= (+ .cse0 (* 4294967296 .cse3) 4294967280) (+ c_main_~sn~0 (* 4294967296 .cse2)))))) is different from true [2020-10-13 11:11:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:17,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:17,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:11:17,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:17,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:17,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:17,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:17,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:17,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:11:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:17,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:17,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:17,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:17,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:11:17,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:11:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:11:17,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 11:11:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:17,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:17,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:17,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:11:17,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:11:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:11:17,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:11:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 11:11:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:17,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:17,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:17,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 11:11:17,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:11:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:11:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:17,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:11:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:17,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:17,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:17,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:17,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:11:17,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:17,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:11:17,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:17,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:11:17,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 3 not checked. [2020-10-13 11:11:17,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510823288] [2020-10-13 11:11:17,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:11:17,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 11:11:17,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441057200] [2020-10-13 11:11:17,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:11:17,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:17,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:11:17,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=88, Unknown=1, NotChecked=18, Total=132 [2020-10-13 11:11:17,931 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 12 states. [2020-10-13 11:11:20,382 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (* c_main_~sn~0 (- 1)))) (let ((.cse0 (<= (+ c_main_~sn~0 4294967290) 0)) (.cse1 (<= 4 c_main_~sn~0)) (.cse4 (* c_main_~x~0 (- 1))) (.cse5 (* 4294967296 (div (+ .cse2 6) 4294967296))) (.cse3 (* 2 c_main_~x~0))) (and (or .cse0 .cse1) (or (and (<= c_main_~sn~0 2) (<= 2 c_main_~sn~0)) (<= 4 (+ c_main_~sn~0 (* 4294967296 (div (+ .cse2 4) 4294967296))))) (or (<= 6 c_main_~sn~0) .cse0 .cse1) (let ((.cse7 (div c_main_~sn~0 4294967296)) (.cse6 (div (* c_main_~x~0 2) 4294967296))) (or (<= (+ .cse3 (* 8589934592 (div (+ .cse4 4294967296) 4294967296))) (+ c_main_~sn~0 .cse5 14)) (<= 1 (+ c_main_~x~0 (* 4294967296 (div (+ .cse2 (* .cse6 (- 4294967296)) (* .cse7 4294967296) 4) 8589934592)))) (<= (+ .cse3 (* 4294967296 .cse7) 4294967280) (+ c_main_~sn~0 (* 4294967296 .cse6))))) (<= 1 (+ c_main_~x~0 (* 4294967296 (div (+ .cse4 3) 4294967296)))) (let ((.cse8 (* 8589934592 (div c_main_~x~0 4294967296)))) (or (<= .cse3 (+ c_main_~sn~0 .cse5 .cse8 12)) (and (<= c_main_~sn~0 4) (<= .cse3 (+ c_main_~sn~0 .cse8 14)))))))) is different from true [2020-10-13 11:11:25,128 WARN L193 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-13 11:11:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:29,583 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-13 11:11:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 11:11:29,584 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-13 11:11:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:29,585 INFO L225 Difference]: With dead ends: 52 [2020-10-13 11:11:29,585 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 11:11:29,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=82, Invalid=304, Unknown=2, NotChecked=74, Total=462 [2020-10-13 11:11:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 11:11:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 11:11:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 11:11:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-13 11:11:29,596 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 44 [2020-10-13 11:11:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:29,596 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-13 11:11:29,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:11:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-13 11:11:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:11:29,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:29,598 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:11:29,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 11:11:29,599 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:29,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:29,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1878094685, now seen corresponding path program 5 times [2020-10-13 11:11:29,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:29,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977417663] [2020-10-13 11:11:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:29,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:34,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:34,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 11:11:34,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 11:11:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-13 11:11:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 11:11:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:11:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 11:11:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:41,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:41,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:11:41,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:11:41,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:41,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:11:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 11:11:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:11:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:11:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:41,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 11:11:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:41,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:41,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:41,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:11:41,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:11:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:11:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:41,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 11:11:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:41,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:41,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:41,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:41,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:11:41,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:11:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:11:41,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:41,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:11:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:41,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:41,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:41,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:41,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 11:11:41,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:11:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:11:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:41,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 11:11:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:41,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:41,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:11:41,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:11:41,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:11:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:11:41,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 62 refuted. 2 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 11:11:41,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977417663] [2020-10-13 11:11:41,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:11:41,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 11:11:41,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742737883] [2020-10-13 11:11:41,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:11:41,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:41,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:11:41,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=173, Unknown=3, NotChecked=0, Total=210 [2020-10-13 11:11:41,551 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 15 states. [2020-10-13 11:11:56,311 WARN L193 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-13 11:11:58,405 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_main_~x~0 (+ (* 4294967296 (div c_main_~x~0 4294967296)) 4)) (let ((.cse0 (div (* c_main_~x~0 2) 4294967296))) (<= (+ (* 2147483648 .cse0) 1) (+ c_main_~x~0 (* 2147483648 (div (+ (* c_main_~x~0 (- 1)) (* .cse0 2147483648) 1) 2147483648)))))) is different from false [2020-10-13 11:12:02,620 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 17 [2020-10-13 11:12:13,115 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_main_~x~0 (+ (* 4294967296 (div c_main_~x~0 4294967296)) 4)) (<= 2 (+ c_main_~x~0 (* 2147483648 (div (+ (* c_main_~x~0 (- 1)) 2) 2147483648))))) is different from false [2020-10-13 11:12:17,318 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 17 [2020-10-13 11:12:23,617 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_main_~x~0 (+ (* 4294967296 (div c_main_~x~0 4294967296)) 4)) (<= 3 (+ c_main_~x~0 (* 2147483648 (div (+ (* c_main_~x~0 (- 1)) 3) 2147483648)))) (or (and (<= 0 c_main_~sn~0) (<= c_main_~sn~0 0)) (let ((.cse0 (div c_main_~sn~0 4294967296))) (<= (+ (* 4294967296 .cse0) 6) (+ c_main_~sn~0 (* 4294967296 (div (+ (* c_main_~sn~0 (- 1)) (* .cse0 4294967296) 6) 4294967296))))))) is different from false [2020-10-13 11:12:30,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:12:30,127 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-10-13 11:12:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 11:12:30,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-13 11:12:30,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:12:30,129 INFO L225 Difference]: With dead ends: 56 [2020-10-13 11:12:30,129 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 11:12:30,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=104, Invalid=497, Unknown=11, NotChecked=144, Total=756 [2020-10-13 11:12:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 11:12:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 11:12:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 11:12:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-13 11:12:30,140 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 52 [2020-10-13 11:12:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:12:30,141 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-13 11:12:30,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:12:30,141 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-13 11:12:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 11:12:30,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:12:30,143 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:12:30,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 11:12:30,143 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:12:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:12:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1262160983, now seen corresponding path program 6 times [2020-10-13 11:12:30,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:12:30,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661785479] [2020-10-13 11:12:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:12:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:31,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:31,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:35,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:35,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 11:12:35,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 11:12:35,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 11:12:35,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 11:12:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:12:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 11:12:35,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:44,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:12:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:44,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:44,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:12:44,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:44,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:12:44,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:12:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:12:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:44,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:12:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:44,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:12:44,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 11:12:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:12:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:12:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 11:12:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:48,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:48,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:12:48,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 11:12:48,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:12:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:12:48,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 11:12:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:48,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:48,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:12:48,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:12:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:12:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:12:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:12:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:48,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:48,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:12:48,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 11:12:48,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:12:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:12:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 11:12:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:51,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:12:51,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:12:51,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:12:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:12:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:51,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 11:12:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:51,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:51,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:51,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:12:51,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:12:51,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:12:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:12:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 24 proven. 92 refuted. 7 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-13 11:12:51,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661785479] [2020-10-13 11:12:51,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:12:51,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 11:12:51,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518336410] [2020-10-13 11:12:51,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 11:12:51,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:12:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 11:12:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=225, Unknown=7, NotChecked=0, Total=272 [2020-10-13 11:12:51,109 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 17 states. [2020-10-13 11:12:56,227 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-10-13 11:13:07,012 WARN L193 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-10-13 11:13:13,666 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-13 11:13:14,259 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-13 11:13:16,613 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-13 11:13:33,725 WARN L193 SmtUtils]: Spent 10.62 s on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-13 11:13:36,161 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~x~0 (- 1))) (.cse4 (* 4294967296 (div c_main_~x~0 4294967296)))) (and (let ((.cse3 (div (* c_main_~x~0 2) 4294967296))) (let ((.cse1 (* .cse3 2147483648)) (.cse2 (* 2147483648 .cse3))) (or (<= (+ c_main_~x~0 (* 2147483648 (div (+ .cse0 .cse1 2147483648) 2147483648))) (+ .cse2 1)) (<= (+ c_main_~x~0 (* 2147483648 (div (+ .cse0 .cse1 2147483650) 2147483648))) (+ .cse2 4))))) (or (<= (+ c_main_~x~0 (* 2147483648 (div (+ .cse0 2147483651) 2147483648))) 5) (<= (+ .cse4 2147483650) c_main_~x~0) (and (<= c_main_~x~0 (+ .cse4 2)) (<= (+ .cse4 1) c_main_~x~0))) (<= c_main_~x~0 (+ .cse4 5)))) is different from false [2020-10-13 11:13:57,124 WARN L193 SmtUtils]: Spent 14.67 s on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-10-13 11:14:09,906 WARN L193 SmtUtils]: Spent 8.39 s on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-10-13 11:14:12,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:14:12,212 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-13 11:14:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 11:14:12,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2020-10-13 11:14:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:14:12,215 INFO L225 Difference]: With dead ends: 62 [2020-10-13 11:14:12,215 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 11:14:12,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 85.1s TimeCoverageRelationStatistics Valid=155, Invalid=703, Unknown=16, NotChecked=56, Total=930 [2020-10-13 11:14:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 11:14:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-13 11:14:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 11:14:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-13 11:14:12,241 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 60 [2020-10-13 11:14:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:14:12,244 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-13 11:14:12,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 11:14:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-13 11:14:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 11:14:12,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:14:12,246 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:14:12,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 11:14:12,247 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:14:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:14:12,247 INFO L82 PathProgramCache]: Analyzing trace with hash 977341265, now seen corresponding path program 7 times [2020-10-13 11:14:12,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:14:12,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259581867] [2020-10-13 11:14:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:14:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:12,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:12,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:14,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:14,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:15,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:15,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:17,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 11:14:17,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 11:14:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 11:14:17,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 11:14:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:14:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 11:14:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:14:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:25,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:25,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 11:14:25,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:14:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:14:25,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:14:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:14:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:14:25,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:14:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:25,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:25,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:25,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:14:25,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:14:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:14:25,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:14:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:14:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:14:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 11:14:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:25,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:25,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:14:25,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:14:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:14:25,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:14:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:14:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:14:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 11:14:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:25,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:25,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:25,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:14:25,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:14:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:14:25,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:14:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:14:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:14:25,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:14:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:25,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:14:25,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:14:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:14:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:14:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:14:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:14:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 11:14:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:25,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:25,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:14:25,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:14:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:14:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:14:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:14:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:14:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 11:14:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:25,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:25,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:14:25,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:14:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:14:25,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:14:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:14:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:14:25,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 11:14:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:14:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:14:25,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:14:25,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:14:25,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:14:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:14:25,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:14:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:14:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:14:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:14:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:14:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 34 proven. 106 refuted. 4 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 11:14:25,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259581867] [2020-10-13 11:14:25,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:14:25,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 11:14:25,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271707406] [2020-10-13 11:14:25,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:14:25,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:14:25,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:14:25,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=151, Unknown=4, NotChecked=0, Total=182 [2020-10-13 11:14:25,977 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 14 states.