/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=BIGGEST --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/float-benchs/drift_tenth.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:28:18,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:28:18,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:28:18,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:28:18,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:28:18,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:28:18,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:28:18,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:28:18,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:28:18,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:28:18,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:28:18,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:28:18,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:28:18,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:28:18,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:28:18,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:28:18,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:28:18,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:28:18,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:28:18,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:28:18,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:28:18,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:28:18,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:28:18,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:28:18,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:28:18,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:28:18,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:28:18,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:28:18,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:28:18,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:28:18,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:28:18,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:28:18,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:28:18,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:28:18,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:28:18,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:28:18,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:28:18,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:28:18,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:28:18,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:28:18,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:28:18,176 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 [2020-10-12 15:28:18,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:28:18,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:28:18,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:28:18,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:28:18,214 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:28:18,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:28:18,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:28:18,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:28:18,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:28:18,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:28:18,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:28:18,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:28:18,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:28:18,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:28:18,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:28:18,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:28:18,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:28:18,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:28:18,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:28:18,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:28:18,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:28:18,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:28:18,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:28:18,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:28:18,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:28:18,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:28:18,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:28:18,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:28:18,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:28:18,219 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:28:18,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:28:18,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:28:18,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:28:18,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:28:18,609 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:28:18,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/drift_tenth.c [2020-10-12 15:28:18,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2bf1d77/fdcf1d5f062c48669b4fec95fbfee71a/FLAGcba149d92 [2020-10-12 15:28:19,319 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:28:19,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/drift_tenth.c [2020-10-12 15:28:19,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2bf1d77/fdcf1d5f062c48669b4fec95fbfee71a/FLAGcba149d92 [2020-10-12 15:28:19,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2bf1d77/fdcf1d5f062c48669b4fec95fbfee71a [2020-10-12 15:28:19,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:28:19,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:28:19,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:28:19,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:28:19,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:28:19,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:28:19" (1/1) ... [2020-10-12 15:28:19,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e983976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:19, skipping insertion in model container [2020-10-12 15:28:19,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:28:19" (1/1) ... [2020-10-12 15:28:19,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:28:19,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:28:19,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:28:19,974 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:28:19,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:28:20,011 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:28:20,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20 WrapperNode [2020-10-12 15:28:20,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:28:20,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:28:20,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:28:20,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:28:20,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (1/1) ... [2020-10-12 15:28:20,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (1/1) ... [2020-10-12 15:28:20,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (1/1) ... [2020-10-12 15:28:20,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (1/1) ... [2020-10-12 15:28:20,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (1/1) ... [2020-10-12 15:28:20,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (1/1) ... [2020-10-12 15:28:20,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (1/1) ... [2020-10-12 15:28:20,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:28:20,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:28:20,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:28:20,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:28:20,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (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 [2020-10-12 15:28:20,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:28:20,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:28:20,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 15:28:20,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:28:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:28:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 15:28:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:28:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:28:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:28:20,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:28:20,449 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:28:20,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:28:20 BoogieIcfgContainer [2020-10-12 15:28:20,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:28:20,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:28:20,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:28:20,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:28:20,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:28:19" (1/3) ... [2020-10-12 15:28:20,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e079e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:28:20, skipping insertion in model container [2020-10-12 15:28:20,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:28:20" (2/3) ... [2020-10-12 15:28:20,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e079e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:28:20, skipping insertion in model container [2020-10-12 15:28:20,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:28:20" (3/3) ... [2020-10-12 15:28:20,467 INFO L109 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2020-10-12 15:28:20,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:28:20,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:28:20,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:28:20,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:28:20,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:28:20,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:28:20,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:28:20,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:28:20,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:28:20,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:28:20,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:28:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-12 15:28:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 15:28:20,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:20,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:20,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:20,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2020-10-12 15:28:20,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:20,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199210058] [2020-10-12 15:28:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:20,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:20,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:28:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:28:20,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:20,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:28:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:28:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:20,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:20,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:20,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:20,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:28:20,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:20,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:20,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:20,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199210058] [2020-10-12 15:28:20,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:28:20,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-12 15:28:20,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323413177] [2020-10-12 15:28:20,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-12 15:28:20,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:20,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-12 15:28:20,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 15:28:20,807 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-12 15:28:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:20,838 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-10-12 15:28:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-12 15:28:20,840 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-12 15:28:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:20,852 INFO L225 Difference]: With dead ends: 31 [2020-10-12 15:28:20,853 INFO L226 Difference]: Without dead ends: 12 [2020-10-12 15:28:20,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 15:28:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-12 15:28:20,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-12 15:28:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-12 15:28:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-12 15:28:20,913 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-12 15:28:20,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:20,914 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-12 15:28:20,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-12 15:28:20,914 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-12 15:28:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 15:28:20,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:20,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:20,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:28:20,916 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:20,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1877050693, now seen corresponding path program 1 times [2020-10-12 15:28:20,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:20,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168538812] [2020-10-12 15:28:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:20,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:20,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:20,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:28:20,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 15:28:20,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:28:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:28:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:21,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:21,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:28:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:21,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168538812] [2020-10-12 15:28:21,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:28:21,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:28:21,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195393128] [2020-10-12 15:28:21,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:28:21,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:21,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:28:21,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:28:21,029 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-10-12 15:28:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:21,053 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-12 15:28:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:28:21,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-12 15:28:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:21,056 INFO L225 Difference]: With dead ends: 19 [2020-10-12 15:28:21,056 INFO L226 Difference]: Without dead ends: 14 [2020-10-12 15:28:21,057 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 [2020-10-12 15:28:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-12 15:28:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-12 15:28:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-12 15:28:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-12 15:28:21,070 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-12 15:28:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:21,071 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-12 15:28:21,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:28:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-12 15:28:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 15:28:21,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:21,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:21,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:28:21,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:21,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1175909113, now seen corresponding path program 1 times [2020-10-12 15:28:21,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:21,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252138783] [2020-10-12 15:28:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:28:21,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 15:28:21,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:28:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:28:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:21,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:21,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:28:21,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:21,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:21,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252138783] [2020-10-12 15:28:21,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:21,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-12 15:28:21,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798228491] [2020-10-12 15:28:21,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:28:21,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:21,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:28:21,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:28:21,292 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-10-12 15:28:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:21,332 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-12 15:28:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:28:21,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-12 15:28:21,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:21,334 INFO L225 Difference]: With dead ends: 21 [2020-10-12 15:28:21,334 INFO L226 Difference]: Without dead ends: 16 [2020-10-12 15:28:21,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:28:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-12 15:28:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-12 15:28:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-12 15:28:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-12 15:28:21,340 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-10-12 15:28:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:21,341 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-12 15:28:21,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:28:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-12 15:28:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 15:28:21,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:21,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:21,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:28:21,343 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:21,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1607619511, now seen corresponding path program 2 times [2020-10-12 15:28:21,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:21,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896840703] [2020-10-12 15:28:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:28:21,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:28:21,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:28:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:28:21,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:28:21,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:21,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896840703] [2020-10-12 15:28:21,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:21,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 15:28:21,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721163853] [2020-10-12 15:28:21,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:28:21,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:21,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:28:21,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:28:21,468 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-12 15:28:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:21,512 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-12 15:28:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:28:21,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-12 15:28:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:21,514 INFO L225 Difference]: With dead ends: 23 [2020-10-12 15:28:21,514 INFO L226 Difference]: Without dead ends: 18 [2020-10-12 15:28:21,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:28:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-12 15:28:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-12 15:28:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-12 15:28:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-12 15:28:21,521 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-12 15:28:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:21,522 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-12 15:28:21,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:28:21,522 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-12 15:28:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 15:28:21,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:21,523 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:21,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:28:21,524 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash -130515723, now seen corresponding path program 3 times [2020-10-12 15:28:21,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:21,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190392619] [2020-10-12 15:28:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 15:28:21,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 15:28:21,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:28:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:28:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:28:21,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:21,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190392619] [2020-10-12 15:28:21,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:21,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:28:21,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569294957] [2020-10-12 15:28:21,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:28:21,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:28:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:28:21,715 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-10-12 15:28:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:21,751 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-12 15:28:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:28:21,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-12 15:28:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:21,753 INFO L225 Difference]: With dead ends: 25 [2020-10-12 15:28:21,753 INFO L226 Difference]: Without dead ends: 20 [2020-10-12 15:28:21,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:28:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-12 15:28:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-12 15:28:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-12 15:28:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-12 15:28:21,761 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-12 15:28:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:21,761 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-12 15:28:21,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:28:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-12 15:28:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 15:28:21,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:21,763 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:21,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:28:21,764 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:21,764 INFO L82 PathProgramCache]: Analyzing trace with hash 263802547, now seen corresponding path program 4 times [2020-10-12 15:28:21,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:21,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8370507] [2020-10-12 15:28:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:28:21,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:28:21,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:28:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:28:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-12 15:28:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:21,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:28:21,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:21,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8370507] [2020-10-12 15:28:21,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:21,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:28:21,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847010316] [2020-10-12 15:28:21,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:28:21,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:21,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:28:21,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:28:21,935 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-12 15:28:21,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:21,981 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-12 15:28:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:28:21,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-12 15:28:21,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:21,983 INFO L225 Difference]: With dead ends: 27 [2020-10-12 15:28:21,983 INFO L226 Difference]: Without dead ends: 22 [2020-10-12 15:28:21,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:28:21,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-12 15:28:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-12 15:28:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-12 15:28:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-12 15:28:21,991 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-10-12 15:28:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:21,991 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-12 15:28:21,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:28:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-12 15:28:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:28:21,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:21,993 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:21,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:28:21,994 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:21,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1246537969, now seen corresponding path program 5 times [2020-10-12 15:28:21,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:21,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147724361] [2020-10-12 15:28:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:22,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:22,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 15:28:22,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:22,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 15:28:22,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:28:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:28:22,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:22,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:22,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:22,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:22,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:28:22,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:22,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147724361] [2020-10-12 15:28:22,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:22,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:28:22,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118516187] [2020-10-12 15:28:22,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:28:22,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:22,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:28:22,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:28:22,158 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-10-12 15:28:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:22,203 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-12 15:28:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:28:22,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-12 15:28:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:22,205 INFO L225 Difference]: With dead ends: 29 [2020-10-12 15:28:22,205 INFO L226 Difference]: Without dead ends: 24 [2020-10-12 15:28:22,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:28:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-12 15:28:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-12 15:28:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-12 15:28:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-12 15:28:22,213 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-10-12 15:28:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:22,213 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-12 15:28:22,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:28:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-12 15:28:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 15:28:22,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:22,215 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:22,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:28:22,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:22,216 INFO L82 PathProgramCache]: Analyzing trace with hash 762473391, now seen corresponding path program 6 times [2020-10-12 15:28:22,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:22,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245167432] [2020-10-12 15:28:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:22,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:22,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:28:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 15:28:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:28:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:28:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:22,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:22,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:22,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:22,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:28:22,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:28:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:22,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245167432] [2020-10-12 15:28:22,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:22,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:28:22,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134500862] [2020-10-12 15:28:22,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:28:22,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:22,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:28:22,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:28:22,461 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-10-12 15:28:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:22,510 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-12 15:28:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:28:22,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-12 15:28:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:22,512 INFO L225 Difference]: With dead ends: 31 [2020-10-12 15:28:22,512 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 15:28:22,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:28:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 15:28:22,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-12 15:28:22,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-12 15:28:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-12 15:28:22,519 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-10-12 15:28:22,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:22,519 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-12 15:28:22,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:28:22,520 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-12 15:28:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:28:22,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:22,521 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:22,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:28:22,521 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash -567118099, now seen corresponding path program 7 times [2020-10-12 15:28:22,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:22,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862316714] [2020-10-12 15:28:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:22,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:22,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:28:22,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:22,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:28:22,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:28:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:28:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:22,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:22,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:22,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:22,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:28:22,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:22,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862316714] [2020-10-12 15:28:22,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:22,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:28:22,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742397943] [2020-10-12 15:28:22,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:28:22,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:22,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:28:22,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:28:22,688 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-10-12 15:28:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:22,736 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-12 15:28:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:28:22,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-12 15:28:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:22,738 INFO L225 Difference]: With dead ends: 33 [2020-10-12 15:28:22,738 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 15:28:22,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:28:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 15:28:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-12 15:28:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 15:28:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-12 15:28:22,745 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-10-12 15:28:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:22,745 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-12 15:28:22,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:28:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-12 15:28:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:28:22,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:22,747 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:22,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:28:22,747 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:22,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1595714219, now seen corresponding path program 8 times [2020-10-12 15:28:22,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:22,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802140748] [2020-10-12 15:28:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:22,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:28:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 15:28:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:28:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:28:22,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:28:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:22,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:22,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:28:22,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:22,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802140748] [2020-10-12 15:28:22,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:22,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:28:22,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099133121] [2020-10-12 15:28:22,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:28:22,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:22,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:28:22,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:28:22,954 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2020-10-12 15:28:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:23,043 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-10-12 15:28:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:28:23,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-12 15:28:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:23,047 INFO L225 Difference]: With dead ends: 35 [2020-10-12 15:28:23,047 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 15:28:23,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:28:23,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 15:28:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 15:28:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 15:28:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-12 15:28:23,070 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-10-12 15:28:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:23,071 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-12 15:28:23,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:28:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-12 15:28:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:28:23,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:23,073 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:23,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:28:23,074 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:23,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1313400553, now seen corresponding path program 9 times [2020-10-12 15:28:23,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:23,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043244638] [2020-10-12 15:28:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:23,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:23,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:23,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:28:23,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:23,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 15:28:23,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:23,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:28:23,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:28:23,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:28:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:23,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:23,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:28:23,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:28:23,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:28:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:28:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:28:23,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043244638] [2020-10-12 15:28:23,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:23,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:28:23,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691358379] [2020-10-12 15:28:23,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:28:23,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:23,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:28:23,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:28:23,268 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-10-12 15:28:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:23,326 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-10-12 15:28:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:28:23,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-12 15:28:23,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:23,328 INFO L225 Difference]: With dead ends: 36 [2020-10-12 15:28:23,328 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 15:28:23,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:28:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 15:28:23,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-12 15:28:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 15:28:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-12 15:28:23,335 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-10-12 15:28:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:23,336 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-12 15:28:23,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:28:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-12 15:28:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:28:23,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:23,337 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:23,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:28:23,338 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash 592907175, now seen corresponding path program 10 times [2020-10-12 15:28:23,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:23,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752436660] [2020-10-12 15:28:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:28:23,348 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:28:23,349 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:28:23,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:28:23,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:28:23 BoogieIcfgContainer [2020-10-12 15:28:23,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:28:23,381 INFO L168 Benchmark]: Toolchain (without parser) took 3692.36 ms. Allocated memory was 146.8 MB in the beginning and 243.8 MB in the end (delta: 97.0 MB). Free memory was 101.4 MB in the beginning and 177.5 MB in the end (delta: -76.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:28:23,382 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:28:23,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.59 ms. Allocated memory is still 146.8 MB. Free memory was 101.2 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:28:23,384 INFO L168 Benchmark]: Boogie Preprocessor took 137.88 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 91.8 MB in the beginning and 181.3 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:28:23,385 INFO L168 Benchmark]: RCFGBuilder took 302.04 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 169.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:28:23,386 INFO L168 Benchmark]: TraceAbstraction took 2922.20 ms. Allocated memory was 202.9 MB in the beginning and 243.8 MB in the end (delta: 40.9 MB). Free memory was 169.3 MB in the beginning and 177.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:28:23,390 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.59 ms. Allocated memory is still 146.8 MB. Free memory was 101.2 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.88 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 91.8 MB in the beginning and 181.3 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 302.04 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 169.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2922.20 ms. Allocated memory was 202.9 MB in the beginning and 243.8 MB in the end (delta: 40.9 MB). Free memory was 169.3 MB in the beginning and 177.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L8] float tick = 1.f / 10.f; [L9] float time = 0.f; [L10] int i; [L12] i = 0 [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND FALSE !(i < 10) [L15] CALL __VERIFIER_assert(time != 1.0) [L4] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 55 SDslu, 360 SDs, 0 SdLazy, 174 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 7911 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/285 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...